Generally speaking, _________ according to the directions, the drug has no side effect.
| A．when taking | B．when taken |
| C．when to take | D．when to be taken |
.If Bush _____his sister to attend the party, she will certainly be glad. She hasn't met Bush for years.
| A．allows | B．promises | C．demands | D．suggests |
— I'm not the man ________the phone. She asked for Henry. — I'm sorry I was mistaken.
| A．called on | B．calling over | C．wanted on | D．rung up on |
The step you have taken is ________ much risk（冒险）.
| A．one of | B．the one of | C．the one | D．that one |
We've always known him ________ a warm but calm character.
| A．for | B．against | C．on | D．as |
Now that he has missed his ________, he'll have to wait for the next round.
| A．chance | B．turn | C．duty | D．class |