Why are you looking so –I began to clean the house early in the morning. I’ve been doing it all day!

I really don’t know how anyonecan_____your constant complaint; no wonder you have lost so many friends.

My sister isn’t at home. I have to _____ my naughty niece.

You can put the medicineyou like, on condition that the children can’t reach it.

I________a training course in Hangzhou to study English in the coming summer vacation.[ ]