Jenny hopes that Mr. Smith will suggest a good way to have her written English ________.
When the winter _____ , all the construction works in northern China have to be stopped .
If the balance of nature is ____ , a series of problems will arise .
.This is Mr. White , ____ I think has something interesting to tell you .
---- Will Thursday or Friday ____ you ? ---- Either will _____ .
This will not only keep the study habit ____ but also keep you up to date on your class assignments .