60 БАЛЛОВ!
С)read,translate the sentences,change the words in italics into the words with similar and opposite meanings.
1.He happened to meet her in that BROAD street.2.They are investigating COMPLEX problems.3.it was a very DIFFICULT experiment .4.They STARTED researching this problem.5.it was a BIG contribution .
2.fill in the gaps with the missing words in the following sentences,the first letter of each word has been given to help you:
1.different theories u... the fact.2.the b.... of some scientific fields are not clear.