. The little boy is dirty from head to foot because he ___ in the mud all morning.
| A．had played | B．has played | C．was playing | D．is playing |
.Ladex does’t feel likeabroad.Her parents are old.
| A．study | B．studying | C．studied | D．to study |
—I’m sorry I didn’t finish it on time
—
| A．Fine，thanks | B．No，thanks | C．Thanks a lot | D．Thanks anyway |
- I probably shouldn't have any more cake.
-Oh,. It won't kill you.
| A． | go ahead | B． | hold on, please |
| C． | you're welcome | D． | that'll do |
By the time Jack r
eturned home from England, his son. from college.
| A．graduated | B．has graduated |
| C．had been | D．had graduated |
a strange plant! I've never seen it before.
| A．Which | B．What | C．How | D．Whether |