Answer:
They didn't arrived yesterday.
Answer:
She seemed to understand the problem completely.
Explanation:
The infinitive 'to understand' is not split by any descriptors.
There is no passage and answer choices, so it is impossible to answer this question. I apologise.
Answer:
Answer of letter A.The narrator is able to justify his failures with theirs.
Explanation:
Because the narrator is suggesting they are responsible for the state of science
