The world’s population is getting larger and larger, so scientists are trying to _______ new ways to solve the food problem.
#56879
A
catch up with
B
keep up with
C
come up with
D
make up with
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My brother_________ Beijing many times. He __________ Nanjing for a week.
#54695
A
has been to, has gone to
B
has been to, has been in
C
has gone to , has been in
D
has gone to, has been in
They could see nothing because the lights suddenly _______.
#55382
A
went on
B
went over
C
went down
D
went out
She ________ his number in the phone book to make sure that she had got it right.
#58617
A
looked up
B
looked for
C
picked put
D
picked up
The lady _____ dancing as a hobby in her sixties, and she is really good at it now.
#61940
A
dressed up
B
looked up
C
took up
D
put up