Luyện tập tổng hợp

ND

ex1 give correct form of the word

1. my brother has a big __________ of foreign coins( collect)

2. ___________ pollution os a serious problem today ( environment)

3. everyone must take part in preventing______________________--( deforest)

4. i was pleased (hear)______________________________________ you've been promoted

NH
24 tháng 11 2018 lúc 19:27

1. my brother has a big __________ of foreign coins( collection)

2. ___________ pollution os a serious problem today ( environmental)

3. everyone must take part in preventing______________________--( deforestation)

4. i was pleased (to hear)______________________________________ you've been promoted

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