Edward , you play so well. But I _____you played the piano.
| A．didn’t know | B．hadn’t known | C．don’t know | D．haven’t known |
Puzzled by this strange natural phenomenon, the scientists started to explore every _______ they knew to figure it out.
| A．impression | B．intention | C．avenue | D．design |
To the public’s delight, a large number of government officials who _______ their power have been well punished.
| A．ignored | B．abused | C．obtained | D．countered |
In the capital Kathmandu, thousands of people _______ the night on pavements, in parks and open fields in chilly temperatures before they returned to their collapsed homes.
| A．would spend | B．were spending |
| C．spent | D．had spent |
Why _______ you leave with Lucas now? There are still two days left before you go to work and you can stay with us for more time.
| A．should | B．shall | C．could | D．must |
It wasn’t _______ he took off her mask _______ I recognized he should be a famous film star.
| A．when; that | B．until; when |
| C．until; that | D．when; then |