------When do we need to pay the balance ?------- ________September 30. 

Luckily, Smith brought a map, __________ we would have got lost.

Nowhere else _____ be able to find a larger display of sea animals, including one of the largest collections of sharks in the world.

.These photographs will show you _______. 

.--- What can I do for?--- I’d like to buy a gift for my sister’s birthday, one at a proper price but of _____ great use and it’d better be ______ surprise.