16. He made another wonderful discovery, __________ of great importance to science.
| A．I think which is | B．which I think it is | C．which I think it | D．which I think is |
Don’t try to cheat—you’ll never _____ it.
| A．get along with | B．get away with | C．get down to | D．get across |
--- Sorry, I made a mistake again.
--- __________. As long as you practise more, you will succeed one day.
| A．Never mind | B．Certainly not |
| C．Out of the question | D．Don’t mention it |
Don’t use words ,expressions or phrases __________ only to people with
specific knowledge.
| A．being known | B．to be known | C．known | D．having been known |
From mom’s love, patience and understanding, I have learned what a huge responsibility __________ is to raise a child.
| A．one | B．that | C．this | D．it |
The teacher paused on purpose __________ the sudents to stop talking.
| A．reminded | B．reminds | C．to remind | D．having reminded |