can cause high blood pressure and hearing problems.
| A．Air pollution | B．Water pollution | C．Light pollution | D．Noise pollution |
There is ______ eating grass on the hill.
| A．a few sheeps | B．a sheep |
| C．some sheep | D．little sheeps |
Young children can ______fireworks if their parents are not with them.
| A．put on | B．take off |
| C．look out | D．let off |
— ______ in the yellow river?
— There’s a nice boat.
| A．How’s | B．Where’s | C．Who’s | D．What’s |
—_____does your mother go for a walk？
— Every afternoon.
| A．How long | B．How much |
| C．How often | D．How many |
—Is Sandy in Mr. Wu's office ?
— Yes, she __________Mr. Wu __________her birthday party.
| A．invites; coming | B．is inviting; to come to |
| C．is inviting; comes to | D．invites; to come to |