Improving your spoken English by talking much with foreigners from Britain would ________，for practice makes perfect.
| A．make sense | B．make sure |
| C．make believe | D．make public |
Modern plastics can _________ very high and very low temperatures.
| A．stand | B．keep | C．hold | D．remain |
---What does PM2.5 mean?
--- It’s a professional ______ indicating the condition of air pollution.
| A．number | B．mark | C．term | D．item |
--- How are things going, Janet?
--- They have set out to deal with the present situation ______ they think deserves their immediate attention.
| A．which | B．where | C．when | D．what |
--- Do you have the time?
--- Yes. But... my watch is not very __________.
| A．efficient | B．temporary | C．proper | D．accurate |
---How old can you guess your new English teacher is ?
--- It’s hard to say. But I guess him to be _____between 35 and 40.
| A．anybody | B．anywhere | C．anyhow | D．anything |