It will be difficult for a robot the same as humans.
#48768
A
do
B
to do
C
doing
D
does
推荐题目
She always watches her son ________ the road every morning, or she will feel worried.
#48963
A
crossing
B
cross
C
to cross
D
to crossing
Students should pay attention to __________ the teacher in class.
#50928
A
hear
B
listen to
C
listening to
D
hearing
My parents told me try ______on Christmas Eve because Santa Clause may come and send me some gifts.
#50171
A
not to sleep
B
don't sleep
C
not sleep
D
to not sleep
He’s very good at English. He spends most of his free time______ new words.
#51407
A
remember
B
remembering
C
remembers
D
remembered