She is ________ the newspapers to be thrown away and putting away the rest.[ ]

His idea was considered ______. which of the following ones is wrong ?

What made Professor Liu thunder in the classroom yesterday? — A student’s interrupting his speech _____ the burst of his anger.

Aunt Sally has ________ children, two boys and two girls.

Mr. Wang decided to devote all his time_______ his spoken English before going abroad.