Customers are asked to make sure that they______ the right change (零钱) before leaving the shop.
#103123
A
will give
B
will be given
C
have given
D
have been given
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Remember not to telephone me after 7:30 pm, for I ____ the students in the classroom then.
#102211
A
will coach
B
will be coaching
C
have been coaching
D
have been coached
His mother looked very tired,for she _____ the house herself all day.
#102009
A
had cleaned
B
has been cleaning
C
had been cleaning
D
has cleaned
. One of the skaters talented enough to stop her is Asada, who _____ against her since they were junior skaters. 
#103813
A
would compete
B
is competing
C
has been competing
D
is being competed