—On December 13th. And it can us of the hard days in the past.

A. remind B. remember

C. return D. reduce

A. on；in B. in；in C. on；on D. in；on

【题目】Our boss will be on business next week, and he asked me to book a ticket for him.
A.leader of a family
B.leader of a company
C.leader of a country

A. Take them away B. Take it away C. Bring away it D. Bring it away

—I often do it _________ tapes and English radios.

A. by hearing B. in listening to

C. by listening D. by listening to

A. mustn't；Carla's B. must；Carla C. mustn't；Carla D. must；Carla's

A. What's B. What

C. Where's D. Where

A. You, too B. I’m eleven C. Thank you D. I’m fine

A、out, in B、out, out C、in, out

A. What B. When C. Where D. How