Teachers often tell their students _______ across the road when the traffic light is red.
| A．not go | B．not to go | C．don’t go | D．didn’t go |
Life is a journey with trouble, but with care and wisdom you can____ any problem you face.
| A．hand out | B．work out |
| C．find out | D．put out |
It is reported that a space station ______ on the moon in a few years.
| A．was built | B．will be built |
| C．is built | D．has been built |
During the 12th five -year plan, China ____ great achievements in environmental protection.
| A．has made | B．made | C．was making | D．will make |
I have some difficulty ______English.
| A．to learn | B．learn | C．learning | D．learned |
You _______be too careful when you are driving.
| A．can’t | B．mustn’t | C．can | D．must |