Newspaperman-refers to a newspaper. According to the above description, Mr. Green is a journalist and writes for The China Journal, so it can be inferred that he works for a newspaper.

My cat sleeps during the day and starts catching mice at night. From the at before the second space, it can be inferred that night follows, because only the preposition before night uses at.

C-why's answer is of course because.

Brushes-He handed the workers some brushes to paint the wall. Brush means brush, which is a countable noun. There is something in front of it to indicate something, so it is definitely not a brush, so use the plural.

Difficulty/difficulty-the former is an adjective and the latter is a noun, which means difficulty.

Dress-for reasons similar to 4.

Librarian/library-the former is a librarian and the latter is a library. She works as a librarian in the library.

Gread in the answer to this question should be grade. There are two ways to say grade four or grade four.

B-tourist destination, if it is plural, only add S at the end.

Is this big room Tom and Jim's? For all, use the name+.

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