Question

Choose the answer among A,B,C,D to complete each of the sentences below:

In order to grow vegetables productively, gardeners must know______________.

A. that the requirements for each vegetable 

B. what the requirements for each vegetable are 

C. what are each vegetables’ requirements 

D. that is required by each vegetable

Answer 1

Chọn B

“what the requirements for each vegetable are”: yêu cầu đối với mỗi loại rau là gì

“what + S +be”, “requirement” đi với giới từ for