4. If Marcia_(decide) to travel alone, I_(give)    her some tips.

3. Unless more trees_(plant),    there_(be) more pollution.

2. Where_he_(see) the film if he_(have) time?

1.    If you_(feel) tired, you have to take a rest.

4.   They have oranges.(用he改写句子)
 He_________________ orange.

(    )    10.    I    won’t go to his birthday party_I’m invited.

A. if    B.    when    C.    unless    D. as soon as

(    )9.    —    Could you tell me_?

一 Yes. They_to    the museum.

A. where the girls    are; have gone    B. where were the    girls;    have been

C. where are the    girls; have gone    D. where the girls    were;    have been

  3.   My teacher likes playing basketball.(改为一般疑问句）

 ________  your    teacher __________ playing basketball?

(    )    8.    —    There’s somebody at the door. Who_it be? Is it the postman?

—No. It_be him. It’s just seven o’clock. It’s too early.

A. must; may not B. will; won’t C. may; mustn’t    D. may; can’t

(    )    7.    I go jogging in the park every day_the    weather is really    awful.

A. if    B.    before    C.    unless    D. because