It is these poisonous products_____can c
题型:选择题
问题:
It is these poisonous products_____can cause the symptoms of the flu , such as headache and aching muscles .
A.who
B.that
C.how
D.what
It is these poisonous products_____can cause the symptoms of the flu , such as headache and aching muscles .
A.who
B.that
C.how
D.what