As we all know ,Columbus America and Edison light bulbs.
#53582
A
discovered ; invented
B
invented ; discovered
C
discovered ; discovered
D
invented ; invented
推荐题目
You have finished writing an e-mail on computer , but too many mistakes in it . You can click _____ .
#52789
A
Delete
B
Forward
C
Send
D
Draft
—Many students don’t know how to ________ stress and become worried.—I think they’d better ask their teacher for help.
#57953
A
come up with
B
do with
C
deal with
D
argue with
It takes about 30 minutes _______ a bicycle from my home to school.
#62102
A
ride
B
riding
C
to ride
D
rides
The floor is so wet. Let’s _____________.
#55546
A
stop mopping it up
B
stop to mop it up.
C
stop mopping up it
D
stop to mop up it