_____ the waiter didn’t understand what the old lady was saying , he knew what she wanted.
| A．Unless | B．Because of | C．Even though | D．Because |
----______have you been learning to swim ? ----Half a year.
| A．How long | B．How often | C．How far | D．When |
----_______ did you start studying English ? -----Five years ago.
| A．When | B．How long | C．How often | D．What |
The room was dark, _______ I turned on the lights.
| A．and | B．or | C．but | D．so |
---Mike hurt his leg while playing football yesterday.?
--- _______ .
| A．That’s nothing | B．That’s all right |
| C．Never mind | D．I’m sorry to hear that |
When they went into the park, they saw someone ______ Chinese Kongfu.
| A．plays | B．played | C．to play | D．playing |