—Jack，I have________working out the math problem．
—Don’t worry．Let me help you．
A．fun
B．trouble
C．experience
Plan your time carefully and make sure you have some time ___ what you like every day.
| A．to do | B．doing | C．do | D．done |
I won’t go to the concert this evening. I ________ watch the NBA on TV. It’s more exciting.
| A．had better | B．would rather | C．prefer | D．have to |
Paul isn’t as ______ as Sandy. He often makes mistakes in his homework.
| A．careless | B．more careless | C．careful | D．more careful |
They will try their best in the Dragon Boat Racing _______ they may fail.
| A．if | B．though | C．until | D．when |
--- Everybody is playing outside. Can I join them, Mom?
--- _______ Not until you have finished practicing the piano.
| A．Why not? | B．Will you? | C．I hope so | D．I’m afraid not. |