Your _______ is very helpful. I guess I'll take it.
A.secret B. advice C. promise D. purpose
Mr. Li is always patient to give me ______ on how to work out the problems.
A. an advice B. many advice C. some advice
His doctor had advised him _______ smoke, and later his mother made him ______ buying more cigarettes.
A. not to; stop B. not to; to stop C. to not; to stop D. to not; stop
-So beautiful flowers! I can't decide ______ for my mom.
-For Mother's Day, it can't be better to take some carnations（康乃馨）.
A. when to choose B. which to choose C. how to choose