22.Some people are worrying about the possibility ________ cellphones could be responsible for a range of illnesses, from rashes to brain tumors.
A.that | B.why | C.how | D.Whether |
相关知识点
推荐套卷
22.Some people are worrying about the possibility ________ cellphones could be responsible for a range of illnesses, from rashes to brain tumors.
A.that | B.why | C.how | D.Whether |