21.The key point of this speech was that we should take effective measures ________ water pollution.
A: stopping
B: stop
C: stopped
D: to stop
A: stopping
B: stop
C: stopped
D: to stop
举一反三
- The key point of his speech was that we should take effective measures _____ water pollution.
- The<br/>key point of his speech was that we should take effective measures<br/>____water pollution. A: stopping B: If C: stop D: while E: stopped F: until G: to stop <br/>17___A__you<br/>want some samples of our new product, you might contact our sales<br/>manager. H: unless
- I think it is high time we (take) __________ strict measures to stop pollution.
- It’s time for us to take measures to stop water _____ as it is getting more and more serious. A: condition B: pollution C: standard D: population
- I think it’s high time we (take)_____ strict measures to stop pollution. A: took B: would take C: had taken D: have taken