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