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 |
- What took you so long?
- I got lost. I have no _______of direction.
| A．sense | B．ability | C．knowledge | D．feeling |
We can never expect ________bluer sky unless we create _____less polluted world
| A．a;a | B．a ;the | C． the ;a | D．the; the |
—Tom，how about going for a picnic this weekend?
— ________. I love getting close to nature.
| A．I'm afraid not | B．I couldn't agree more | C．It's well done | D．I don't think so |
_________ after a long walk, Kate called and said she couldn't come to the party.
| A．Worn out | B．Having worn out | C．To be worn out | D．To wear out |
Written in a hurry, ________________.
| A．they find many mistakes in the report |
| B．Sam made many mistakes in the report |
| C．there are lots of mistakes in the report |
| D．the report is full of spelling mistakes |