题目如下
106 国营
22.It is important that the secretary _____ reservations for that particular
restaurant a week ahead of time.
(A)make (B)to make (C)making (D)will make
我知道B、C不合
故A、D在选，答案是A，为什么不是mkaes? 不用第三人称?
34.The public has different opinions on this issue. Some think it will be very
inconvenient when buyung drinks from tea shops, _____ others feel that it is
environmental friendly and tea shops should come up with new designs of cups
enabling customers to drink the beverage without using single-use plastic
straws.
(A)in spite of (B)when (C)which (D)while
我知道A、C不合
答案是D，想知道B跟D的差异是? 为什么B不能选
谢谢各位大大帮我解惑

34 语意。while 有“然而”的用法。

It is important that A (should) do somethingshould被省略了

22是变形假设法，动词前方省略should所以that子句的动词要用原形动词34的while和when都可以当连接词，表示当...的时候不过while也可以表示让步关系，可放句首或句中