If (如果) you have problems (问题),you can ask Tom _____ help.
It’s very hot these days. The temperature stays _____ 32℃.
My brother has ________ good memory, but he has _______ poor eyesight.
—I can’t keep on studying. I have a stomachache. —_______.
This is the only thing _______ I can do for you.
——What did you say to your grandmother on the phone just now? —— I asked her _______ .