It's necessary that measures _____ at once to help people understand global warming is affecting our life to an increasingly high degree.
Mr. Li arrived at the Wuguang train station twenty minutes ago, but the train to Guangzhou_______yet.
To pass the driving test, Alice had a busy month driving the car.
How can they expect to learn anything_________they never listen?
Only when______senior high school_________to show a great interest in poems.
— Why are you still here? Everybody has gone to attend the lecture by the president. — Oh, I__________about it!