【单选题】

DearClient,

Future Offices is advising businesses to plan as far ahead as possible to ensure guaranteed staff cover during holiday periods. There is now a (19) shortage of skilled secretarial and administrative stall’ and this is (20) to get worse over the next twelve months.
Businesses which require staff with experience of specialist computer applications are the most at (21) . You are advised to (22) our agency well before the staff are actually needed to be certain of filling gaps with adequately (23) personnel. If you don’t, it’s almost (24) that you will be left without the skills needed to (25) your office running smoothly.
Tile (26) for the shortage of secretarial staff appears to be a combination of two (27) . There has been an (28) in demand for secretarial services over the last few years, and at the same time there has been a (29) of students deciding to choose secretarial studies.
OfficeAngelsAgency would (30) to emphasize that business should not underestimate the difficulty of (31) experienced temporary staff. It is also necessary to make the (32) that businesses should be prepared for the tact that they may have to pay mere for this kind of (33) in the future.
A．lack
B．need
C．requirement
D．few