They were surprised that a child should work out the problem _______

They were surprised that a child should work out the problem ________ they themselves couldn't.

#79772

once

then

While

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Kids are not allowed to leave kindergartens               their parents come to pick them up.

#31446

unless

since

although

because

Tell your doctor with a detailed medical history ______ he can give you the accurate treatment.

#31347

even if

so that

in case

as though

This pen is ___ mine, ___ his.

#79757

never, except

nor, also

not, but

not, or

-----Do you have a minute? I’ve got something to tell you. -----Ok, ______ you make it short.

#32456

now that

if only

so long as

every time

John felt very embarrassed ________ he entered the government hall.

#30995

for the moment

the first time

for the first time

at the moment

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