According to the recent research,heavy coffee drinking and heart attack is not necessarily___and effect
| A．reason |
| B．excuse |
| C．question |
| D．cause |
--I’m going to the post office.---____you are there, can you get me some stamps?
| A．As | B．While | C．Because | D．If |
The Whites are ___ holiday.But I don't know where they have gone___ their holiday.
| A．in, for | B．on, for | C．for, in | D．at, on |
--Was his father very strict with him when he was at school?---Yes.He had never praised him ___ he became one of the top students in his grade.
| A．after | B．unless | C．until | D．when |
They began killing the native ___ they set foot on the island. Which of the following is NOT right?
| A．the moment | B．immediately | C．straightly | D．directly |
I know nothing about her ___ she is from the United States.
| A．except | B．except that | C．except for | D．besides |