—Why are you standing here, Mrs. White ? 

—I’m waiting for my son, he ________back form school.

A. won’t               B. hasn’t come            C. doesn’t

–Where is Tom?  --He _______ the USA. He _______ back in two months.
A. has gone to; comes                     B. has been to; will be
C. has been to; comes                     D. has gone to; will be

—Hello, May I speak to Mr Black?

—Sorry, he ______ Hong Kong for a meeting and he______ back in a week.

A. went; was B. has been to; will be

C. has gone to; has been D. has gone to; will be

---Do you know _____ back tomorrow?

-  --Sorry, I don’t know. When he _____ back, I’ll tell you.

A. when does he come, comes    B. when he comes, will come

C. when he will come, comes     D. when will he come, will come

Jack, please tell Tom to call me when he ______ back.

A.come B. comes C. came D. will come