1 . _________ I _________ yesterday’s nucleic acid test, I _________ from traveling.

A．Had; taken; wouldn’t have been restricted	B．Have; taken; wouldn’t be restricted
C．Did; take; wouldn’t be restricted	D．Do; took; wouldn’t have been restricted.

2 . ________ each human being stricken blind and deaf for a few days at some time during his early adult life, it would be a blessing.

A．Is

B．Had been

C．Should

D．Were

3 . —Would you mind being charged for WeChat, Mary?
—Certainly. I ________WeChat if I had to pay now.

A．would drop

B．will drop

C．will have dropped

D．would have dropped