The final examination is coming up soon. It’s time for us to ________ our studies. 
#63788
A
get down to
B
get out
C
get back for
D
get over
推荐题目
His uncle went abroad in 2010, and _______since.
#63782
A
has not been heard of
B
had not been heard of
C
had not heard of
D
has not heard of
 The house is dirty because it ________ since they moved out.
#63759
A
doesn't clean
B
isn't cleaned
C
hasn't cleaned
D
hasn't been cleaned