Bird flu is likely to occur( )there are a lot of birds,ducks
There are a lot of birds in the trees.
the flu is considered____by viruses which are likely to repr
there are a lot of/There is a lot of?
C___ of bird flu are difficult to cure at present.
Look, there are a lot of ducks s_ in the river.
a,the,pond,of,there,ducks,are,in,lot.连词组句
There are ____ (a lot ,a lot of) birds in the tree.
There ___ (is,are) a lot of birds in the tree.选择括号内的单词填空,并说明
there are\is a lot of .
There are a lot of things to ()
There ___________ a lot of birds in the park.a.is b.have c.a
------a lot of chairs.A there is B there are