(   ) 4. We        TV at ten last night.

   A. was watching   B. were watching

   C. watched   D. watch

(   ) 3. My sister was doing the dishes      my brother was sweep- ing the floor.

   A. when   B. while   C. which   D. what

（   ) 2. —I called you at 8 o'clock yesterday evening,but there was no answer.

       - Oh,I'm sorry. I      dinner at my friend's home.

   A. have   B. had   C. was having   D. have had

(   )1.What      you      when I rang you up yesterday?

   A. are;doing   B. were;doing

   C. do;do   D. have;done

5. 为了变得更强壮.他每天锻炼身体。

He takes exercise every day           to           .

4. 他总是两手空空地返回家中。

He always           with nothing.

3. 自从20世纪中叶，我们家乡已经建起了几所小学了。

Our hometown           some primary schools since          

2. 那个十八岁的女孩已经捐赠了至少一千本图书给山区的孩子们。

That        girl has       1,000 books to the children in the mountains.

1. 当今，数百万的中国人离开农村去城市里寻找工作。

     ,       Chinese leave the countryside to      work in the cities.

(   ) 6. ―How much is the ticket to Central Park?

      — A one-way ticket        $ 40,and you can      another

$ 20 for a round-trip.

   A. costs;pay   B. cost;spend

   C. pay;spend   D. spends;pay