You’d better not phone the manager between 7 and 8 tomorrow evening; he ________ an important meeting then.

A．will have

B．would have

C．will be having

D．will have had

在四部门经济中，若投资I、储蓄S、政府购买G、税收T、出口X和进口M同时增加，则均衡收入（）

A.不变

B.趋于增加

C.趋于减少

D.变化趋势不能确定