17. There are _____ methods and inventions to use solar energy.
A.saving-energy
B.energy-saving
C.energy-save
D.saved-energy
16. At the interview, you will _____ a lot of questions.
A.asked
B.be asked
C.asking
D.ask
14.
-"why do we need clean air?"
-"well, it ______ us with a lot of oxygen."
A.protects
B.provides
C.preserves
D.produces
12. They didn't understand the matter; ______, they didn't ask for help.
(Làm và giải thích tại sao giúp với mình ạ. Cảm ơn nhiều!).
Loga
Sinh Học lớp 12
