Collecting stamps as a hobby___________ increasingly popular during the past fifty years.
| A．becomes | B．became | C．has become | D．had become |
iPhone 6s have been on sale for over a month, but they are still hardfor Chinese.
| A．to be bought | B．bought |
| C．to buy | D．buy |
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 |