People like to make friends with ______ shares their interests.
| A．whom | B．whomever | C．whoever | D．who |
After Chang’e-3 landed on the moon on Dec 14, China became the third country _________ this after the US and the former Soviet Union.
| A．having achieved | B．achieving |
| C．achieved | D．to have achieved |
---Excuse me, has the train from Beijing arrived yet?
--- ________, you are three quarters earlier. It's only 9 now.
| A．Unconsciously | B．Instantly |
| C．Absolutely | D．Actually |
The speed limit for bicycles on campus is 15 mph, ___________ otherwise posted.
| A．unless | B．until |
| C．since | D．however |
In manufacturing, cheaper materials are constantly being for the better, more expensive kind.
| A．maintained | B．cancelled |
| C．substituted | D．deposited |
I have no idea of what is in fashion nowadays, so my choice might be quite ____.
| A．abundant | B．arbitrary |
| C．considerate | D．aggressive |