What’s up You lookdown.—I have piles of papers ______, but I typeso slowly.

She often planssomething to help others.

A(n) ________ to the present project should be put in place in case the present one doesn’t work.

nobody gave him any help, he ______ have done the research on his own．

Unless you have planted something, you won’t be able to know the pleasure of watching the thing you have planted ______.