If you are going to be a computer programmer, you'd better start with the ABCof computers.( )
A.English grammarB.English letters
the difficulties
the basic knowledge
In our school library there ___a number of books.( )
is
has
are
have
Now,people have more free time.Square Dancing is becoming___.( )
popular and popular
more popularer
popularer and popularer
more and more popular
The man over there ___ be our teacher.Our teacher is studying in France.( )
must
mustn't
can
can't
I like dumplings ___ my grandmother cooks.( )
that
who
where
when
The sea is large and full of water.It covers about ___of the planet.( )
three fourth
three fourths
third fourth
third fourths