【题目】The lights in his room are on. He ________ be working.

【题目】--- I hear ____ your grandpa ____ your grandma like watching Beijing Opera.

【题目】Computers can work out the problems ________ than human beings.

【题目】- Would you like to be my pen friend?

【题目】How can we read the word “head”?

【题目】-________ will your uncle come back from London?

【题目】Attention please. The plane will ______ in five minutes.

【题目】We should be more careful ________ much time on computer games.

【题目】—________ will the plane arrive?—In about one and half an hour.

【题目】Which letter(字母) has the different（不同的）vowel(元音)?