Hi, Is this a bookshelf or a bookcase? Google search returns very similar pictures so I can't really distinguish between bookshelves and bookcases. Thanks in advance

Hi! This is a washboard. We put soap and brush on the hole up there. We wash clothes by rubbing the clothes on the rough surface. We wash our clothes through it before putting them into washing-machine.

Could I say, My mother is doing our clothes/laundries up. Many thanks in advance.

The cashier and secretary are on guard. Could anybody correct this sentence for me? Many thanks in advance.

Are the sentences below correct? The junk will travel fast when it's down the wind. Down the wind, the junk will travel fast. Is the sentence below right? There are dozens of icons there. dozens of = many? It can not be used before

Could anybody help me with the question below? in full blossom= in blossom Could anybody corect the sentence below for me? The flower is very beautiful when it is in full blossom. Many thanks in advance.

(1) The room is a mess, please do it up at no time. Which the following one is correct ? Do up= make it clean Do up= make it clean and tidy Do up= make it tidy Could anybody help me with it? Many thanks in advance.

A piece/slice of pizza A__of pizza Could anybody help me with this? I am really keen on knowing it. But I don't know if the word really exist. Many thanks in advance.

May I ask you about English signboards written vertically? Please see the above example. Which one is more common, the one on the right-hand side or the one on the left-hand side? Thank you in advance.