Today, WeChat（微信）becomes very popular, and more and more people like to use it to _____ each other.
A. depend on B. communicate C. believe in
Over fifty countries _______ the AIIB(亚投行) so far.
A. joined B. was joining
C. had joined D. have joined
—Hi, Lily! Why don't you go swimming with them? —Because I ________ my homework yet.
A. didn't finish B. won't finish C. haven't finished D. don't finish
—Did you ______that Nancy has been a little too quiet these days?
— Yes. She didn’t even say a word this afternoon.
A. hope B. notice C. explain D. decide
Try to sing more English songs,and you will find it interesting_______ a foreign language.
A. learing B. learns C. to learn D. learned
—It’s too cold today. Would you mind the window? —Certainly not. Go ahead.
A. to close B. closing C. close D. closed
