—Coach, can I continue with the training?
—Sorry, you can’t you haven’t recovered from the knee injury.
| A．until | B．before | C．as | D．unless |
It was not until midnight ______ they reached the camp site.
| A．that | B．when | C．while | D．as |
The first decade of the 21st century ______ breathtaking, non-stop development in China．
| A．witnesses | B．witnessed |
| C．will witness | D．had witnessed |
______is expected, according to the online survey, is that house prices will not go up any more.
| A．As | B． It | C． Which | D． What |
As is known to all, the term “Lei Feng” _____ anyone who is selfless, or anyone who is ready to help others in China．
| A．focuses on | B．stands for | C．results from | D．turns to |
My sister was very afraid all the way because it was the first time she ______ a car.
| A．has driven | B．drove | C．had driven | D．is driving |