—Bob, where is Linda?—She be in the library, but I am not sure.
The girl usually does her homework _____ it is very late at night.
—How long can I _____ the English workbook? —For two weeks.
I don’t like physics ______ it’s too difficult for me.
—_____ do you _____ the book? —It’s very interesting.
—How long can I keep the books? —_____