1．--There so many foreigners in the streets these days.
-- They might be runners in the Yellow River Estuary (入海口，河口) International Marathon.
A. isB. areC. haveD. will be
3．-Have they visited the zoo many times.
-______________. Only once.
A. Yes, they have B. No, they haven C. No, they have
4．They have a lot to eat and drink. It is a structure of ________.
A. S+V+PB. S+V+IO+DO C. S+V+DO+COD. S+V+DO
5．Its not clever_______ others homework.
A．for you copy B．for you to copy C．of you to copyD．of you copying
6．________ important _________ us to eat a balanced diet.
A. Its, for B. Thats, for C. Its, to
7．--- of shoes do you wear? - - Size 7.
A. What B. What size C. What kind D. What color