When ____ to feel unworthy, children often work extra hard to please their parents．
#96107
A
to make
B
making
C
made
D
having made
推荐题目
She suggested the problem worth paying attention ________ at the meeting.
#90680
A
to be discussed
B
to been discussed
C
to being discussed
D
should be discussed
Three students from Changjiang college _____ while saving the ______ boys.
#94412
A
got drown; drowning
B
got drowned; drowning
C
were drowned; drowned
D
were drowning; drowning
________ many times，I still didn't know how to operate the machine.
#91844
A
Having taught
B
Having been taught
C
Being taught
D
Teaching
. _______ different kinds of pianos, the workers farther improved their quality.
#97438
A
To produce
B
Being produced
C
Produced
D
Having produced
By 2013, cases of AIDS had been reported in Harbin, thus _____ AIDS a provincial concern.
#88418
A
to make
B
making
C
having
D
made