______ the blind wandering through the traffic, motorists would have to step on their brakes at once.
A. Seeing B. Having seen C. Seen D. To have seen
Much of life today _____ the manners of everyday getting along: queuing, answering the phone, keeping promises, remembering birthdays.
A. is B. are C. was D. were
After the snowstorm, mailboxes in the community were covered by snow, or _______, or lying on the ground.
A. breaking B. being broken C. having broken D. broken
He has been talented at designing and creating things ________ he was young.
A. when B. before C. since D. while
I set up email addresses for connecting with my parents last May. But I didn’t write to them as often as I ______.
A. should B. must have C. should have D. must
---You’re trembling. What’s happened?
---- I ______ outside in the cold for over an hour waiting for a bus.
A. was standing B. have been standing
C. stood D. will stand
