--- Look! It ____ be Jack on the playground.---It ____ be him. Because I saw him enter the school library just now.A. may; mustn’t B. must; can’t C. can; can’t
— Look at the photo I took in Chiang Mai, Yunnan Province. ________the Dai people were having! — Wow! They were celebrating the Water Festival.
Jenny keeps two pets. One is a dog, _________is a rabbit.
— You really went to the park last weekend? — Yes, I _________go there. Look! This is a photo of me in the park.
Physics _________much easier for me since Mrs. Yang began to teach us.
After a 3-week winter vacation, students usually _________ some weight when they return to school.