You had better________ some time every day for sports so that you can keep yourself energetic.
_______ seems strange to us is ________ the clever boy failed in the exam.
The famous singer ______ where he was born and in 1930 he came to Beijing.
— What is it ________ made her upset?— It is the missing bike.
— It’s very cold here in winter. Have you _______ here?— Not yet. I find it hard to adapt to the weather.
_____ the doctors really doubt is ______ my mother will recover from the serious disease soon.