—Linda, together with her parents, ______up the mess in the park at the moment.—It’s meaningful to be a volunteer. Let’s join them.
#41675
A
is cleaning
B
are cleaning
C
has cleaned
D
have cleaned
推荐题目
A young man ___ John _____ school recently.
#42489
A
calling; has left
B
called; will leave
C
calling; is leaving
D
called; has left
The earthquake ____ when I ____ some cleaning.
#40065
A
starts, was doing
B
started, was doing
C
was starting, was doing
D
starts, were doing
 -All of us _______ sometimes. -You had better have a good rest when you are free. 
#40103
A
gets tired
B
get tired
C
getting tired
D
is tired