Since the opening and reform policy, China a boom in its economy.
#102286
A
enjoys
B
has been enjoying
C
enjoyed
D
having enjoyed
推荐题目
Large quantities of information as well as some timely help ___________ since the organization was built.
#100458
A
has offered
B
had been offered
C
have been offered
D
is offered
Though Professor Liu ____ in New York for seven years, he has never regretted moving back to Shanghai, his hometown.
#102851
A
lived
B
has lived
C
had lived
D
was living
— Flight MU257 ______, I must be off now.— Have a nice trip.
#102791
A
is being announced
B
has announced
C
was announcing
D
had been announced.
-The window is dirty. -I know. It ___________ for weeks.
#99391
A
hasn’t cleaned
B
didn’t clean
C
wasn’t cleaned
D
hasn’t been cleaned
—How time flies. A little boy turns into a young man.—Yes, it won’t be long he from university.
#102482
A
when, will graduate
B
after, graduates
C
since, had graduated
D
before, graduates