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
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