He is a _____ boy, so he can’t go to thepark by himself.

—Ready to quit guessing, Sandy?—No, no, I hold on! I think I ________ to the answer.[ ]

My sister met him at the Grand Theatre yesterdays afternoon, so he ________ your lecture.[ ]

The Internet plays an important role in our life. Without the Internet, life ________ quite different nowadays.

e class time, our teacher has________ students do half of the exercise in class and complete the other halffor homework. .