John as well as the other staff members who ______ working with this world-famous company ______ to attend its 100th anniversary.
| A．is… is | B．is… are | C．are… is | D．are… are |
Anyway, I can’t cheat him---it’s against all my __________.
| A．emotions | B．principles |
| C．regulations | D．patience |
Please do me a favor— _______ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting |
| C．invite | D．invited |
This is not my story, nor ______ the whole story. My story plays out differently.
| A．is there | B．there is | C．is it | D．it is |
_______ you may have, you should gather your courage to face the challenge.
| A．However a serious problem |
| B．What a serious problem |
| C．However serious a problem |
| D．What serious a problem |
It is uncertain ________ side effect the medicine will bring about, although about two thousand patients have taken it.
| A．that | B．what | C．how | D．whether |