They have been doing morning exercises            they            up.
#40137
A
since, got
B
for, get
C
since, get
D
for, got
推荐题目
Our classroom          by us every day!
#38468
A
is cleaning
B
has cleaned
C
must clean
D
is cleaned
 - Is there anything wrong, Tom? You look sad.- Oh. nothing much. In fact, I_______ of my friends back home.
#36638
A
have just thought
B
will just think
C
was just thinking
D
would just think