It’s a difficult skill to master, but ______, it will benefit you for the rest of your life.
#90000
A
once obtained
B
when to obtain
C
after obtaining
D
while obtaining
推荐题目
It is time for class. Will you please get the blackboard__________?
#95522
A
to clean
B
cleaning
C
cleaned
D
having cleaned
Seeing the sun _____ above the surface of the sea we let out a shout of joy.
#97957
A
to rise
B
to raise
C
rising
D
raising
The office ordered his soldiers ________.
#93951
A
stand still
B
do not stand still
C
to not stand still
D
not to stand still
“We can’t go out in this weather，”said Bob，________out of the window.
#93539
A
looking
B
to look
C
looked
D
having looked
Jack had his house _______ last night and he and his family were left homeless.
#97116
A
burning down
B
to burn down
C
burn down
D
burned down