She looks happy. She ________ have passed the exam.—- I guess so. It’s not difficult after all.

Our chemistry teacherannounced that he would do the experiment in a differentway we might findinteresting.

s thelady standing over there－I am notsure, but it may be ___ from the provincial government.

What a tall tree! I can’t reach the apples.—I think Gao Yan can. She is the ________ girl in our class.

What’s the date today .