The little boy won’t go to sleep ______ his mother tells him a story.
A．or B．unless
C．but D．whether
Mary made coffee ________ her guests were finishing their meal .
A．so that B．although
C．while D．as if
The engineers are so busy that they have zero time for outdoor sports activities, ________they have the interest.
A．wherever B．whenever
C．even if D．as if
Find ways to praise your children often, ____ you’ll find they will open their hearts to you.
A．till B．or
C．and D．but
Shirley, a real book lover, often brings home many books to read __________ the library.
A．in B．for
C．by D．from
____ regular exercise is very important, it’s never a good idea to exercise too close to bedtime.
A．It B．As
C．Although D．Unless
