Mr. White , many customers want to see you._______ they wait here or outside?
#87416
A
Will
B
Shall
C
Can
D
Would
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So far it has been suggested that special stress _____ on pre-school education. 
#86589
A
is laid
B
be laid
C
has been laid
D
have been laid
He       have come here yesterday,        he?
#87985
A
mustn’t, did
B
couldn’t, has
C
must, haven’t
D
must, didn’t