----- Have you heard of Earth Day ?----Yes . The first Earth Day ______ in 1970 to educate us to protect our planet .
#39398
A
celebrates
B
celebrated
C
is celebrated
D
was celebrated
推荐题目
—I’ve got a ticket for the basketball game tonight.—Cool! How ________ you ________ it?
#42138
A
had，got
B
did，get
C
were，getting
D
will，get
—Oh, you look tired. Why?—I ________ to the Great Wall yesterday. It was really wonderful.
#36601
A
went
B
will go
C
goes
D
go