You smoke at the oil station， it's too dangerous．
I'm sorry， I won't．（ ）
| A． |
couldn't |
B． |
needn't |
C． |
wouldn't |
D． |
mustn't |
_______ she's wrong,it's not a big deal．（ ）
A．AlthoughB．BecauseC．If
His mother won't be there，________ his father might．（ ）
A．andB．butC．or
_______ pleasant journey it is!（ ）
A．HowB．WhatC．What a
My best friend helps to ______ the best in me，as the saying goes．（ ）
A．bring outB．bring inC．bring up
Artemisinin _______ by Tu Youyou，a great Chinese scientist．（ ）
A．was inventedB．invented
C．has invented