Physics is difficult ____.
#98661
A
to be learned
B
to learn
C
to be learning
D
to be learn
推荐题目
Now young people ___________to use computer to develop their ___________skills.
#95486
A
are trained/ problem solving
B
are being trained/ solving problem
C
are being taught/ problem solving
D
are taught/ solving problem
Charles Babbage is generally considered ______ the first computer.
#97960
A
to invent
B
inventing
C
to have invented
D
having invented
Paul doesn’t have to be made _______. He always works hard.
#98634
A
learn
B
to learn
C
learned
D
learning
When Jennifer stepped in quietly, her mother, ____ on the bed, was sleeping sound.
#93308
A
laying
B
lain
C
laid
D
lying