----- 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
The lifestyle we were used to ________ a lot these years.
#39204
A
changing
B
changed
C
has changed
D
being changed
The Reads __________ lunch when I got to their house.
#36346
A
was having
B
were having
C
are having
D
is having
This kind of iPad ______ in our computer shop. It ______ very well.
#36209
A
is sold; sells
B
sells; is sold
C
sells; sells
D
is sold; is sold
--- So far this year,many new houses in this area with the help of the government. --- It’s great.
#41632
A
build
B
are built
C
will build
D
have been built