We are ________ the Great Wall all the time.

1. A.
   look forward to visiting
2. B.
   looking forward to visit
3. C.
   looking forward to visiting
4. D.
   look forward to visit

用所给动词的适当形式填空
【小题1】How about _________ (eat) some Beijing Duck?
【小题2】I hope it_________ (not rain) tomorrow.
【小题3】Can your sister ________ (sing) the song in English?
【小题4】He _________ (try) to use a knife to open the door, but he failed at last.
【小题5】It’s not easy_________ (work) out this maths problem.
【小题6】We are looking forward to _________ (receive) your letters.
【小题7】----Millie, please tell your brother not to cross the road, it is dangerous.
----Thank you. I __________(ask) him to be careful.
【小题8】One of the red key rings_______(belong) to Millie.
【小题9】Why not ________(visit) the Great Green Wall next month?
【小题10】Look! He with his parents ________ (lie) on the grass.