I’d like to know ______Chinese.

Was it 80 years before Christopher Columbus crossed the Atlantic ______ Zheng He hadsailed to East Africa?

He is only too ready to help others, seldom, _____, refusing them when they turn to him.

Autumn coming, down ________.

There are some seemingly insignificant matters that, when _______ in time, can become bigger ones later on.

_______ is expected, according to the online survey, is _______ the price of housing will not go up any more.

-----Alice, you clean the blackboard today, _________?       
----- But I cleaned it yesterday.

The weather that day may not be as good as expected, in ________ case we will have to put off the event.

Researchers have found clear and convincing evidence ________ happiness is the key to better health and longer lives.

Jessica has always been honest and straightforward, and it doesn’t matter ________ that she’s talking to.