To show our respect, we usually have to take our gloves off ________ we are to shake hands with.

A．whichever                                

B．whenever

C．whoever                                 

D．wherever

Frank insisted that he was not asleep________ I had great difficulty in waking him up.

A．whether　　

B．a(chǎn)lthough

C．for　　　　

D．so

Please call my secretary to arrange a meeting this afternoon, or ________ it is convenient to you.

A．whenever 

B．however

C．whichever 

D．wherever

________ volleyball is her main focus, she's also great at basketball.

A. Since 

B. Once

C. Unless 

D. While

________all of them are strong candidates, only one will be chosen for the post.

A．Since 

B．While

C．If 

D．As

No matter how ________， it is not necessarily lifeless.  

A．a(chǎn) desert may be dry                  

B．dry a desert may be

C．may a desert be dry                

D．dry may a desert be

________regular exercise is very important, it's never a good idea to exercise too close to bedtime.

A．If               

B．As  

C．Although        

D．Unless

It was a nice meal, ________ a little expensive.

A．though 

B．whether

C．a(chǎn)s 

D．since

He had his camera ready ________ he saw something that would make a good picture.

A. even if 

B. if only

C. in case 

D. so that

He had no sooner finished his speech________the students started cheering.

A．since　　　　　　　

B．a(chǎn)s　　

C．when　　　　　　　

D．than