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omeli [17]
3 years ago
13

Perfect tenses For this section of the test, read each sentence carefully, then fill in the blank spaces with the correct form o

f the verb given in the parentheses (...). Since the middle of the 20th century, scientists (find) have found ______ cures for many diseases. However, so far no one (discover)______
English
2 answers:
Misha Larkins [42]3 years ago
4 0

Answer:

Since the middle of the 20th century, scientists <u>have found</u> cures for many diseases. However, so far no one <u>has discovered</u>

Explanation:

those are the perfect tenses for (find) and (discover)

frosja888 [35]3 years ago
3 0

Answer:

Since the middle of the 20th century, scientists (find) have found ____found__ cures for many diseases. However, so far no one (discover)__ discovered

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