— Why didn’t you come to Mike’s birthday party yesterday?
— Well, I _______, but I had something important to do at the moment.
| A．should | B．must | C．should have | D．must have |
Barack Obama was very happy when many supporters voted ________ him.
| A．on | B．for | C．against | D．at |
The number of smokers in China ________increased in recent years, and a number of them _________ the youth.
| A．has; are | B．have; are | C．is; is | D．are; are |
It is generally accepted that __________ boy must learn to stand up and fight like _______ man.
| A．a; a | B．a; the | C．the; the | D．the; a |
The driver wanted to park his car near the roadside, but was asked by the police _________.
| A．not to do | B．not to | C．not do | D．do not |
In the global economy, a new drug for cancer, _________ it is discovered, will create many economic possibilities around the world.
| A．whatever | B．whoever | C．wherever | D．whichever |