—Don’t forget ______ your homework. John.—Ok. I'll do it right now.A. doing B. do C. to do
--- Lucy often helps her classmates with their study. --- _______ a good girl she is!
We may meet all kinds of difficulties in the future, but we should be confident enough to any challenge.
Millie is quiet and modest and easy________________.
She has finished typing but she doesn’t know _______ next.
The kind teacher devoted all her time ___________ her students.