Put the missing prepositions and translate the sentences into Russian.
1.He was being laughed ... when I came.
2.The doctor has already been sent ... .
3.The child will be looked ... by my yesterday.
4.They were waited ... very long yesterday.
5.the book is often referred ... .

1) He was being laughed at when I came. (Когда я пришел, над ним смеялись)
2) The doctor has already been sent for. (За доктором уже послали)
3) The child will be looked after by me tomorrow. (Завтра ребенок будет под моим присмотром)
4) They were waited for very long yesterday. (Их вчера оч.долго ждали).
5) The book is often referred to. (На эту книгу часто ссылаются).