UNIT 15: SPACE CONQUEST
LANGUAGE FOCUS (TRỌNG TÂM NGÔN NGỮ)
Grammar and Vocabulary
Exercise 1. Dùng could/couldn ’t hay was / wasn't able to để hoàn tất câu.
ĐÁP ÁN
1. couldn’t / wasn’t able to
2. was able to
3. could / was able to
4. was able to
Ngày hôm nay là ngày lạ lùng nhất, bởi chúng ta chưa bao giờ sống nó trước đây; chúng ta sẽ không bao giờ sống lại nó; nó là ngày duy nhất mà ta có.
Today is a most unusual day, because we have never lived it before; we will never live it again; it is the only day we have.
William Arthur Ward
