He looked around and caught a man ______ his hand into the pocket of a passenger.
| A．put | B．to be putting |
| C．to put | D．putting |
It was not until he saw his mom _________.
| A．did the little child stop crying |
| B．that the little child stopped crying |
| C．the little child stopped crying |
| D．when the little child stopped crying |
In dealing with public relations, we should make every effort to prevent the _____ in personality.
| A．contact | B．contrast | C．conflict | D．connection |
—It rained cats and dogs this morning. I'm glad we took an umbrella.
—Yeah, we would have got wet all over if we ________.
| A．hadn't | B．haven't | C．didn't | D．don't |
—Your colleague is speaking English with fluency.
—It's no wonder．She ____ in the UK for a year as a visiting professor
| A．worked | B．has worked |
| C．had worked | D．has been working |
The government must be very _____ about setting policies and make no decision until they are quite sure it is the right one.
| A．particular | B．concerned | C．cautious | D．certain |