– I ran 10 miles last weekend. Can you believe that?
– Wow, that ______ easy!
A. mustn' t be B. mustn't have been
C. can't have been D. couldn’t be
As far as I know, it was the car accident that led to ______．
A. him to be killed B. kill him
C. him having killed D. his being killed
If everything goes well, I ______ home at this time tomorrow morning.
A. will drive B. am going to drive
C. will be driving D. am to drive
On top of the mountain ______, which was built 2,000 years ago.
A. a tower stands B. stands a tower
C. standing a tower D. does a tower stand
______ to get a ticket for the concert Eason's Life, George has been standing in a queue for 3 hours.
A. Determining B. To determine C. Being determined D. Determined
With the development of high technology, more and more new things ______ in the past years.
A. discovered B. have discovered
C. had been discovered D. have been discovered
