During the Golden Week， Alice and her friends had _________ good time in China．

A. a B. an C. the D. /

The actress looked at _________ in the mirror and put on the make﹣up．

A. she B. her C. hers D. herself

Jimmy and his parents visited us _________ a cold night last winter．

A. at B. in C. of D. on

Alibaba CEO Jack Ma has decided to retire from his company in his _________．

A. fifty B. fifties C. fiftieth D. fiftieths

Both of them are still working hard to solve the case _________ the time being．

A. with B. of C. for D. to

I'm afraid that we need _________ six cups for tomorrow's dinner party．

A. another B. other C. others D. the other

Many people think China is one of _________ countries in the world．

A. safe B. safest C. the safest D. safer

Mike， don't be afraid to make mistakes， _________ you'll never make progress．

A. so B. or C. and D. but

Nowadays， people _________ pay for things conveniently with their mobile phones．

A. must B. need C. can D. should

The song sung by the famous singer sounds so ___________ and I love it very much．

A. well B. sadly C. sweet D. bad