下列各组单词中，画线部分发音不同于其它三个的单词是______。
| A．ball | B．sofa | C．four | D．morning |
When you are doing reading exercises, it is a good idea to _________ the questions before you read the articles.
| A．look over | B．look after |
| C．look through | D．look into |
His mother looked __________ at the pictures. How _________ she looked!
| A．careful; careful | B．careful ; carefully |
| C．carefully ; careful | D．carefully ; carefully |
I’m good at maths, but his English is ___________ than mine.
| A．much better | B．more better |
| C．very better | D．quite better |
--How are you today, Mike ?
-- I’m _________________ now. I don’t think this medicine is good for me.
| A．badly | B．better |
| C．well | D．worse |
It’s reported that President Xi Jinping arrived ________ Moscow __________ March22nd to pay a three-day visit to Russia.
| A．at ; on | B．in ; on |
| C．at ; in | D．in ; in |