We’ll ____ three groups to carry out the experiment in chemistry．
| A．be separated from | B．be divided into |
| C．be divided from | D．be separated off |
My headache _____ me．I thought it was going away, but it is getting worse and worse．
| A．kills | B．is killing | C．was killing | D．killed |
We don’t think the experiment is ___ failure. At least we have gained ___ experience for future success.
| A．the; a | B．a; / | C．a; an | D．the; the |
— Sally, our monitor, was late for her class this morning.
— ______? As far as I know, she never came late to class.
| A．How come | B．What for | C．So what | D．Why not |
Every year, Tom remembers to have some flowers ______to her mother on her birthday.
| A．send | B．sent | C．sending | D．to send |
Nanjing is ______ beautiful city, where you can see ______ famous Changjiang River.
| A．a; the | B．a; 不填 | C．the; a | D．不填； the |