If wenow to protect the environment, we'll live to regret it.
| A． | hadn't acted | B． | haven't acted | C． | don't act | D． | won't act |
Sometimes we need true friends’ shoulders ____we can cry to free ourselves from pain.
| A．by which | B．on which |
| C．in which | D．with which |
If we don’t often use the newly learned words, we’ll _____ forget them.
| A．frequently | B．extremely |
| C．gradually | D．loosely |
It is widely____ that hard work can help students make progress.
| A．commanded | B．recognized |
| C．persuaded | D．decided |
Hong Kong’s Occupy Central protesters(抗议者）______ roadblocks on the main roads and they brought trouble to the public.
| A．turned to | B．set up |
| C．gave in | D．cared about |
Our teacher requested that strange signs around us ____be ignored before an earthquake.
| A．couldn’t | B．mustn’t |
| C．would not | D．not |