—I think the man over there must be Bob.
-- It_______ be him. He has______ to Australia.
| A．can’t, gone | B．can’t, been | C．may not, been | D．mustn’t, gone |
We need to ________ the problem in time—we can’t leave it till tomorrow．
| A．read | B．work |
| C．solve | D．Attack |
一Is Kitty really hardworking?
一Ye s_she keeps ________ dancing every day．
| A．practicing | B．to practice |
| C．practiced | D．Practices |
If it ________ tomorrow，we’11 go boating in Xuanwu Lake park．
| A．doesn’t rain | B．rain |
| C．won’t rain | D．didn’t rain |
Hey，Daniel．You should not drop litter so___________．
| A．careful | B．carefully |
| C．careless | D．carelessly |
—Granny, the school trip was very exciting but a little tiring.
—Oh, could you tell me__________?
| A．how did you go to the park |
| B．what you did in the trip |
| C．that you saw something beautiful |
| D．if your friends had played with you |