In my opinion, she is too young to take care of the pet dog ______.
_______ 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.