----______was it ______ they discovered the entrance to the underground palace?----Totally by chance.
#85474
A
How, that
B
What, that
C
When, when
D
Where, that
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.It was _____ his mother came in _____ to prepare his lessons. 
#85386
A
not until; did the boy begin
B
until; that the boy didn’t begin
C
until; did the boy not begin
D
not until; that the boy began
—What was it that caused the party to be put off?—________ the invitations.
#84745
A
Because Tom delayed sending
B
Tom delayed to send
C
That Tom delayed sending
D
Tom delayed sending