_____________ worries me the way he keeps changing his mind.
| A．This | B．That | C．What | D．It |
—How was that?
—I was chatting on line ______ the power went out.
| A．because | B．while | C．as | D．when |
In order not to be disturbed, I spent three hours _______ in my study.
| A．locking | B．locked | C．to lock | D．to be locked |
—What shall I do, go back home or stay here, since it’s so late?
—______. The bus is leaving.
| A．Have a day off | B．That’s a good point |
| C．Get a move on | D．Hang on a minute |
.I have not enough money left, so my_____ at a Christmas cake had to be thrown away.
| A．mind | B．try | C．result | D．attempt |
—Why should I correct it right now, Mum? It’s OK, I think.
— Well, Honey, it will _______ trouble in the future.
| A．pass by | B．refer to | C．take up | D．lead to |