A: I have a problem. I don’t know what to do .B: Let’s ask Dick for help .He can ______ a good idea to solve your problem .
— I ‘m sorry . I ___ your notebook at home.— That’s all right, but remember to ____ it here tomorrow.
While she_____ on the phone, a man walked into her room.
— Where is the post office?— It’s _____ the hospital.
— You went to town last month, What do you think of it?— Terrible . I _____ go there _____.
If there are ____trees, the air in our city will be ____cleaner.