Tom, before you buy the expensive coat, please think about ______ you can afford it.
A. that                   B. when                    C. whether

I won't come back _________August 5 and 7, so you’ll have to go there alone.

I like Chinese _______ my brother likes maths.

– You bought the car about ten years ago?
-- Yes.        it’s old, it still runs well.

The robot did all the housework. _________, Mr. White no longer needed to get up early.

You should return the digital camera to Sally ________she will get angry.

Simon improved his way of study. ________, he has made great progress.

This problem is ______ difficult __________.

---Your Japanese is so good. How long have you been in France?
--- __________ I was five.

When you’re learning English, just use it, ______ you’ll lose it.