He says all _______ tried their best and that all that can be done _______ been done.
#86073
A
has, has
B
have, have
C
have, has
D
has, have
推荐题目
---There______ a concert this evening.---Yes.Exciting news.
#43613
A
are going to be
B
is going to be
C
is going to have
D
will have
Nothing but grass and trees ____ the hill. 
#86172
A
covers 
B
cover 
C
covering 
D
iscovering
There ________ a football match between Class 1 and Class 3 next week.
#43901
A
have
B
has
C
is going to have
D
is going to be