1. When he  ____woke up______, his mother __had already __prepared breakfast.

( QKĐ+When+QKHT )

 2.We  ____went______ to London because our friends  _had invited_________.

(QKĐ +because+QKHT )

3.He  ____heard ______ the news, __went__ to the telephone and _called________ a friend.

4. When she  _____started_____ learning English she __had already__ learned French.(WHEN)

5.  Jane ______had already typed____ three pages when her computer __crashed__.

6. I __haven't been__ to Canada so far. (HTHT)

7. But I _have already travelled__to London a couple of times. (HTHT)

8. I think I started my trip tomorrow. (QKĐ)

9.  Look! Sara _is going_ to the movies. (HTTD)

10.On her right hand, Sara is carrying her handbag. (HTTD)

11. The handbag _is_ very beautiful. (HTĐ)

12.Sara usually _puts_ on black shoes but now she __wearing__ white trainers.

13. And look, she is taking an umbrella because it rainning .

14. They don't know_ where to meet because nobody telling them.

15. It will be cloudy for days before it begins to rain

                                                                                  @Quin