Wouldn’t it be ______ wonderful world if all nations lived in ______ peace with one another?
| A．a; / | B．the; / | C．a; the | D．the; the |
Mary was only too ready to help others, seldom, ______ refusing them when they turned to her.
| A．if never | B．if not |
| C．if any | D．if ever |
Mr. Wang made up his mind to devote all he could ______ his oral English before going abroad.
| A．improve | B．to improve |
| C．improving | D．to improving |
Influenza HINI is an illness that can result in death unless ______ in time.
| A．treat | B．to treat |
| C．treating | D．treated |
MSN, ______ you can chat with your friends, makes communication easy.
| A．why | B．which |
| C．that | D．where |
Mother's love is true love! She's never stopped loving you ______ you become or you do.
| A．whichever | B．however |
| C．whatever | D．whoever |