— Listen! Is that Millie playing the piano in the room?
— No, It_____ be Millie, she has gone to London.
| A．may not | B．needn’t |
| C．mustn’t | D．can’t |
In summer, there is plenty of rain for the grass to grow.
| A．enough | B．many | C．some | D．a lot |
I had a hard time learning math last year.
| A．was hard-working | B．worked hard | C．had trouble | D．didn’t like |
—Would you mind not playing soccer in the street?
—___________. We’ll go and play in the park.
| A．Of course. | B．Thank you | C．Sorry | D．It doesn’t matter. |
—Don’t litter the ground, boy. Look at the sign, “Rubbish must be thrown into the dustbin.”
—Sorry, I’ll __________ right now.
| A．pick it up | B．put it up | C．pick up it | D．put up it |
—The twins are quite different. Sam is wild while Tom is quiet.
—Yeah, Sam is ___________ than Tom.
| A．less outgoing | B．more outgoing | C．much taller | D．more serious |