–Who left the black coat here?
-- I’m not sure. It ____ our math teacher’s. He was here a moment ago.
| A．can be | B．can’t be |
| C．might be | D．must be |
Hello! I'm very glad to see you. When_________ you_________ here?
| A．did; arrive | B．will; arrive | C．have; arrived | D．are; arriving |
Tom rushed into the house______ his mother was cooking.
| A．as | B．before | C．while | D．after |
Basketball has a history of nearly 300 years. Today it is still loved by______ the young___
the old.
| A．both...and... | B．either... or... | C．not...but... | D．neither...nor... |
The magazine___________ be Lily's, for we can find her name on the cover.
| A．may | B．might | C．could | D．must |
— Have you seen______ pen? I left one here this morning.
— Is it___________ black one? I think I saw it somewhere.
| A．the; the | B．a; a | C．the; a | D．a; the |