----- 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
If it ______ tomorrow, I will stay at home and do some cleaning.
#42443
A
will rain
B
rains
C
is raining
D
is going to rain
He often English with the classmates.
#39908
A
practice speak
B
practices speak
C
practices speaking
D
practice speaking
－Where’s your father?－He ______ Beijing. He won’t be back ______ next week.
#42185
A
has gone to; until
B
has been to; until
C
has been to; after
D
has gone to; after