问题

To live on Mars, you need to wear boots which ________ to prevent you from floating off into space.

A:design
B:designed
C:are designing
D:are designed;

正确答案是：

同类题型

How was______ dinner at Jane’s house—It was great. I think Jane’s mum is_______ wonderful cook..

Ther will be less pollution ___more people use public transportation .

uncertain sideeffect the medicine will bring about , though about one thousand patients havetaken it.

hear that you two are getting married. This a celebration.

Where didMary’s parents buy the beautiful vase —— It wasin the same village _______ they spent their holidays last year