---Our classmates went to a concert yesterday afternoon.
---What a pity! I my homework.
| A．had done | B．was doing |
| C．am doing | D．would do |
—Don’t have your mobile phone on when you are in the library.
— __________.
| A．No, I will | B．sorry, I won’t | C．Yes, I will | D．Yes, I won’t |
Nobody knew who was the first ________ at school that morning when the window was broken.
| A．arriving | B．arrived | C．to arrive | D．have arrived |
—May I have your name?
— _______.
| A．Yes, please | B．All right | C．Of course | D．Call me Yang, please |
Great changes have taken place around the world. Nobody can tell _____ in 20 years.
| A．what will it be like | B．how it looked like |
| C．what it will be like | D．how did it look like |
— Shall we go for a hiking this weekend?
— All right, ________ it rains.
| A．if | B．unless | C．when | D．until |