______did the rainstorm come， Mr． Liu？
While we_____a chemistry lesson yesterday afternoon．（ ）
| A． |
When； have had |
B． |
When； were having |
| C． |
While； are having |
D． |
While； have |
Can you tell me some about the Brazil Olympic Games？
OK．Let me help you search the Internet．（ ）
A．serviceB．information
C．discussionD．success
Mike，who helped make the paper plane？
Nobody! I made it all by myself．（ ）
A．yourB．yoursC．youD．yourself
Your head teacher has set up a Wechat group．Could you tell____？
It is more convenient to communicate with our parents．（ ）
A．when it was set upB．why did he set it up
C．what it is used forD．how did he set it up
Do you know the scientist Tu Youyou？
Yes，she is the first Chinese ____won a Nobel prize in science．（ ）
A．who haveB．that haveC．which hasD．that has
My uncle is against wasting anything．
No wonder he would rather ____the old bike than ___a new one．（ ）
A．repair；to buyB．to repair；buy
C．repair；buyD．to repair；to buy