This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
| A．a | B．an | C．the | D．/ |
—Must I take part in the activity?
—No, you _______. You’re too young. You should look after yourself.
| A．mustn’t | B．don’t |
| C．can’t | D．don’t have to |
—Watching TV too much _______ bad for your eyes.
—I’ll go to bed right away.
| A．is | B．are | C．was | D．be |
There _______ an English party in our class next week.
| A．is going to have | B．is going to be |
| C．will have | D．Have |
Sam spends two hours _______ his homework every day.
| A．to do | B．doing | C．do | D．does |
You should not eat _______ meat. It can make you fatter.
| A．too many | B．too much |
| C．much too | D．many too |