Every director needs an assistant that he can( )_ to take care of problems that may occur in his absence.

A.rather the strong

B.rather strong

C.a rather strong

D.the rather strong

A.constructed

B.instituted

C.confirmed

D.given up

A.unless

B.until

C.if

D.or

A.by my leave

B.at leave

C.in holidays

D.on holiday

A.is comprised of

B.is made of

C.contain

D.is composed of

A.however

B.whatever

C.whichever

D.if only