With the loud noise going on in the workshop, I can hardly on my lessons.
| A．put | B．rely | C．concentrate | D．center |
—Did you enjoy your holiday?
—Yes, it’s the best holiday I ________ these years.
| A．had | B．have had | C．had had | D．would have |
—Look! Someone has spilt coffee on the carpet.
—Well, it ________ me.
| A．isn’t | B．hasn’t been | C．hadn’t been | D．wasn’t |
—I bought this shirt for 35 yuan yesterday.
—It’s on sale today for only 29. You should have waited.
—Oh, really? But how ________ I know?
| A．would | B．can | C．did | D．do |
How can I ever concentrate if you ________ continually ________ me with silly questions?
| A．have…interrupted | B．had interrupted | C．are…interrupting | D．were…interrupting |
—Excuse me, sir. Would you do me a favor?
—Of course. What is it?
—I ________ if you could tell me how to fill out this form.
| A．had wondered | B．was wondering | C．would wonder | D．did wonder |