However hard I tried, I just couldn’t ________ them of the truth of my story.
| A．remind | B．convince | C．rid | D．inform |
—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 |
She says that she'll have to close the shop ________ business improves.
| A．if | B．unless | C．after | D．when |
While ______ himself in the newspaper in a cafe , he got his pocket picked.
| A．having buried | B．buried |
| C．burying | D．to be buried |