The teachers often tell their pupils ____ across the road when the traffic light is red.
| A．not go | B．not to go | C．don’t go | D．didn’t go |
–Who’s that boy?
–Liang Bo. He is _____ very popular singer in Voice of China.
| A．the | B．an | C．a | D．/ |
---Where do Tom and John sit ?
--- Tom sits __________ of the room and John sits _________ of the room.
| A．in front; at back | B．in the front; at the back |
| C．in front; at the back | D．in the front; at back |
---Is Lucy ______ her homework?
--- No , she ________ .
| A．do; doesn’t | B．does; isn’t | C．doing; is | D．doing; isn’t |
--- Shenzhen is a beautiful city.
--- Yes. You can see a lot of flowers and trees on ________ of the streets .
| A．both sides | B．all sides | C．both side | D．all side |
-- What can trees do _________ us ?
--- They can _________ harmful gases and produce oxygen .
| A．helping , take in | B．to help , take in | C．helping , take out | D．to help , take care |