The reason why he adapted to the new situations quickly is that he has a _____ attitude.
| A．changeable | B．alternate | C．movable | D．flexible |
After the successful launching of the Shenzhou 9, ______ the astronauts will work and live in Tiangong-1— the space lab module is ______ the whole nation care about.
| A．where, what | B．what, that | C．that, how | D．how, what |
The manager found that his office ______ the day before.
| A．had broken in | B．has been broken into |
| C．had been broken into | D．has been broken in |
Although new problems ______ during the last experiment, they didn’t give up.
| A．came | B．raised | C．arose | D．rose |
Some people always take seriously the ______ of the complete globe end in the near future.
| A．celebration | B．production | C．prediction | D．permission |
— Did you visit the museum today?
— No. We ______ it, but we spent too much time shopping.
| A．could have visited | B．must have visited |
| C．may have visited | D．couldn’t have visited |