----- 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
In the past ten years, our hometown named Yandu（盐都） _____a lot.
#39798
A
changes
B
changed
C
was changing
D
has changed
I ____you yesterday afternoon ,but you ____at home .
#37858
A
call ,aren’t
B
am calling ,aren’t
C
called , weren’t
D
calls, weren’t