—Do you like ball games?
—Yes. They are very fun.
| A．easy | B．much | C．interesting | D．useful |
The robot can help me sweep the floor. smart invention it is!
| A．What | B．What a |
| C．What an | D．How |
Aunt Lucy will tell us something about her trip to Australia when she______back.
| A．came | B．comes |
| C．would come | D．will come |
John didn’t give up looking for a job __________ he got an offer from a German company.
| A．until | B．since |
| C．because | D．if |
— Would you like to go to the cartoon show with me?
— It sounds like fun, ______I’m too busy.
| A．so | B．for |
| C．or | D．but |
All passengers______go through safety check before they take a plane.
| A．can | B．may |
| C．must | D．ought |