问题

It has been proved______eating vegetables in childhood helps to protect you against serious illnesses in later life

A:if
B:because
C:when
D:that

正确答案是：

同类题型

That’s all ______ I have seen and heard

They arrived _____ Wuhan _____ a cold morning.

People complain that the price ofthe apartment is getting.

I have _____ useful dictionary. Do you have ______

－Mathis difficult for me. How I wish to improve it!－Don’tlose your confidence. I believe you will ______ it if you keep trying.