The observations which he reported __________ marketing bothered his boss a lot. 
#95478
A
being concerned
B
concerned
C
be concerned
D
concerning
推荐题目
____ of danger in the street at night, she had to go home, with a friend ____ her.
#94552
A
Warned; accompanied
B
Having warned; accompanying
C
Warning; accompanying
D
Having been warned; accompanying
The research group ____________ 15 members has made great achievements in recent years.
#91591
A
is made up of
B
makes up
C
made up of
D
making up of
Mary is often heard ________ playing piano in the next room in the evening.
#97118
A
practise
B
to practise
C
practising
D
practiced