It is uncertain____side effect the medicine will bring about，although about two thousand patients have taken it.

Please _______to return mybook by Friday. I’ll use it on Saturday.—No, problem. I’ll finishreading it on Thursday.

. If I ______ plan to do anything I want to，I’d like to go to Tibet and travel through as much of it as possible.

The young singer is quite popular ________ the publicShe’s made a remarkable achievement ________ a girl of her age

want another drink— —I said, would you like another drink