---What’s your sister doing now?--- She ______ her homework.
It can’t be Lucy’s bike. Look! ______ is under the tree.
The banana pie tastes delicious. Could I have another______?
On March 11, 2011 _____ earthquake hit Japan.
Which of the following is NOT a traffic sign? A B C
He has tried four times, but his teacher wants him to try ______ fifth time. A. the B. a C. /