Dạng 6: Kỹ năng đọc có đáp án

We are not always successful, (4) _______ we do help many families to live together again in peace.

39/50

We are not always successful, (4) _______ we do help many families to live together again in peace.

and

or

though

but

Giải thích

Chọn đáp án D