—Would you like to go hiking with us this Sunday?
—Sure, _______ I am busy.
| A．until | B．when | C．unless | D．since |
It’s ______ cold today, but I have still finished ______ homework.
| A．too much; too much | B．much too; much too |
| C．too much ;much too | D．much too; too much |
The girls have read ______ books.
| A．two hundreds | B．hundred of |
| C．two hundred of | D．hundreds of |
My sister spends too much time ______computer games.
| A．to play | B．play | C．plays | D．playing |
Teenagers _______ allowed to drive in the street .
| A．should not be | B．should be not |
| C．not should be | D．shouldn’t |
I don't know _______.Can you tell me________?
| A．how swim; what to do | B．how to swim ; what to do it |
| C．how to swim; what to do | D．what to swim; how to do |