—Mum, I can’t see any point in studying hard.
—Come on, dear. Years of hard study will surely _______ in your future career.
| A．make sure | B．pay off |
| C．bring back | D．pay back |
_____ playing dumb with teachers. They know very well their students.
| A．It’s no use | B．There is no doubt | C．It’s no wonder | D．There is no need |
They thought my suggestion reasonable _______a few experts to help them.
| A．that we sent | B．we should send | C．we would send | D．that we send |
_____but he still couldn’t understand the logical connection of the two subjects.
| A．Having told many times | B．Having been told many times |
| C．He was told many times | D．Many times as he was told |
It was not until he came back _____ he knew the police were looking for him.
| A．which | B．since | C．that | D．before |
All her time _______ experiments, she has no time for films.
| A．devoted to do | B．devoted to doing | C．devoting to doing | D．is devoted to doing |