----- 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
---when _______the telephone________，do you know?---Yes．In 1876．
#39777
A
was，invented
B
are；invented
C
did；invent
D
had，invented
—Why are you so happy, today? —Because I to London with my parents tomorrow.
#37412
A
fly
B
flew
C
am flying
D
have flown
The boy ________have ________ brothers ________ sisters.
#37203
A
don’t, any, and
B
doesn’t, any, or
C
don’t, some, or
D
doesn’t, any, and
—May I speak to Mr Wang?—Sorry. He______ a speech now. Please call later.
#40496
A
gives
B
gave
C
will give
D
is giving
My uncle is an experienced teacher. He_____English since 2002.
#36583
A
teaches
B
taught
C
has taught
D
will teach