We’ll plant trees tomorrow, and I don’t knowTom will come and join us.

I know nothing about the history of the telephone. Could you tell me ?— Yes, in 1876

My brother likes reading very much. The sentence structure is______. [ ]

I called you this morning, but nobody answered it.– Oh, we ______ some shopping at the supermarket.

Do you have enough students to clean the laboratory? –No, I think we need____________ students.