﹣Do you know ______ boy over there?
Yes,he is my brother,Li Lei.( )
the
an
a
Mary____ a math problem with her classmates when the math teacher knocked at the classroom door.( )
has discussed
was discussed
was discussing
discusses
______you practice, _________you will be at math.( )
The more; the better
The more; the best
The most; the better
The most; the be
Jack has learned more about teamwork(团队合作) _______ he joined the soccer team.( )
until
since
while
though
_____ my friends _______ I like playing computer games because we think it wastes time.( )
Both; and
not only; but also
Either; or
Neither; nor
﹣﹣﹣_________do your parents come to visit you in the US, Tom?
﹣﹣﹣Once a year.( )
How often
How long
How soon
How far