一、单项填空。20%
1.I love my new friend, ____ he is helpful .
A. because B. when C. that D. but
2. ---We don’t go to school ______.
A. on every Saturday B. at every Saturday
C. in every Saturday D. every Saturday
3. Mr. Brown is often very busy and has no time his friends.
A. chat B. chat with C. to chat with D. to chat
4. Children in China start school ______ six years old.
A. in B. at C. with D. on
