It's dangerous for you to go out for a walk in the forest ___________ at night．（ ）
A．on businessB．by the way
C．on your ownD．on the top
It sounds like a good plan， but you should it with your parents first．（ ）
A．keepB．learnC．discussD．choose
I didn't know anyone at the party， I felt a bit lonely．（ ）
A．orB．soC．andD．but
Thanks for helping ， Mary． I have improved my English a lot．（ ）
A．meB．youC．himD．her
To our surprise， the computer won the chess game against the human player．（ ）
A．certainlyB．usuallyC．finallyD．mostly
In order to sell more products， we need to come up with more ideas．（ ）
A．trueB．commonC．simpleD．creative