10．We _____________ (use)the sun to heat our homes in the future．

9．We ___________ (have)a picnic next week．

8．She ___________ (sing)English songs very well．

7．She _________ (take)the train to Shanghai this evening．

6．I __________ (wait)for the telephone．

5．We all like ________ (eat)dumplings．

4．Let’s go and ____________ (play)football．

3．The students ___________ (read)books in the classroom．

2．They ___________ (visit)the Great Wall next Sunday．

1．Running _________ (be) cheaper and safer than skiing．