Tom, you’ve got a "D" in chemistry．____?
—Well, I find the subject hard and I think I’ll drop it for history next term．
| A．What if | B．How come | C．Why not | D．So what |
More and more people shop online, ______advantage of low prices.
| A．having taken | B．taking | C．taken | D．having been taken |
The Day of the Dead, an ancient Mexican festival, is not a sad day, but______time to celebrate
______cycle of life.
| A．a, the | B．不填, the | C．不填,a | D．the, a |
How______I help them to understand when they won’t listen to me?
| A．can | B．would | C．may | D．must |
So hard _______ that he can go to an ideal university.
| A．studied Tom | B．did Tom study |
| C．does Tom studay | D．studies Tom |
QQ, ______you can chat with your friends, makes communication easy.
| A．why | B．which | C．that | D．where |