Could I use your bike?　—Yes, surely you ______.

_____ the ups and downs in my life, I eventually realized what life was all about.

Was it in April,1970________China succeeded________sending its first satellite into space?-Yes，that’s right.[ ]

If you don’t like the red coat， take the blue one.　　—OK， but do you have ______ size in blue？This one’s a bit tight for me.

What about going to the South Lake for a picnic next weekend —-OK. But I am not sure ____it will rain.