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
We need an effective strategy to help children living in ______ poverty to have the opportunity to receive _______ good education.
A. the, / B. the , a C. /, / D. /, a
