判断下列句中画线部分正误
I buyed a book yesterday.
Sally bought a skirt yesterday.
The student must listen careful and follow their teacher.
判断下列句中画线部分正误，正确的填
We must walk quick down the stairs.
I am calling 119 to help.
根据图示判断下列句子正误，正确的填
I’m going to the zoo this Sunday.
We must talk quietly in the classroom.
You mustn’t bring your dog here.
You can swim in the pool.
根据实际情况判断，对的写
Polar bears live in cold places.
