We all write ______, even when there’s not much to say.

　 A. now and then 　 B. by and by

　 C. step and step 　 D. more or less

21.  — Why didn’t she ask for help at that time?
— You know, at such a midnight, there was no one ________.
A. she could turn to　　 B. for whom to turn　 C. who to turn to　 　 D. for her to turn

Our teacher urges us to form a good habit of learning,______ we think will benefit us in the long term.

　 A．what　 B．that　 C．which　 D．who

Scientists need to do a lot of ______and experiments before they can understand and find a cure for things.
A. search      B. resources   C. research    D. experience

We all know that ______ April Fool’s Day comes in _______ spring on the 1st of April.

A. /;/ 　　　　　　 B. the; the 　　　　　　 C. an; the　 　 　　　D. the;/

She took her son, ran out of the house, _____ him in the car and drove quickly to the nearest doctor’s office.

A. put　　　　　　　　　　　 B. to put

C. putting D. having put

My sister had dropped out of school and (71) m　 ______ unwise decisions with her life. She chose to spend her time with people who were lost as she was. They all chose to ignore their (72) __________　 (responsible) and joined one another in a life which involved drinking and partying. (73)　　　　 (sad), they were all losing time. They were young and had the potential to become (74) w　 _____　 they wanted if they would only choose to respect themselves and believe in a

(75)　　　　 (good) life.

My sister was lost but my father never (76) g　 _____up on her. She may not have ever known it but his prayers and faith in her may have been the very thing she needed. I remember sitting at the family dinner table where everyone had gathered

(77) e　 ___　 my sister. Once again she had (78) c　 ___　 to drink with her friends instead of spending an evening with our family who loved her very much. We said she would not come. But my father said she would. We all rallied against him,

(79)________ (bet) she would not show up and asked why he would say that. We were convinced he was in denial. He (80) s　 _____ said, “I will always bet on her, on all of you.”

What are the changes you want to see _______?（ ）

A. happened　　　 B. to happen　　　 C. happen　　　 D. will happen

—Sorry for having kept you waiting ．But for the traffic jam,I________20 minutes earlier．

—Never mind．I haven’t been waiting that long．

　 A．arrived 　　　　　　　　　 B．would arrive　 　　　　　

　 C．would have arrived　 　　　 D．had arrived　

The earth is one planet in the solar_________ (系统).