The world’s elderly population will exceed(超过) ____ of children by 2060, when each group ____ to account for about one fifth of the population.
—Do you think George has passed the driving test?—No.If so,he ________ his car to our college yesterday.
If we________a table earlier, we couldn't be standing here in a queue.
The door________open,no matter how hard she pushed.
No one________ be more generous;he has a heart of gold.
—Why are your eyes so red?You________have slept well last night.—Yeah,I stayed up late writing a report.