Example sentences of "they can be kept " in BNC.

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1 ‘ Mr Major has made clear that if after an exhaustive debate the Scottish people want a divorce then there is no way they can be kept in the union against their will .
2 Crisis welcomes all donations , but non-perishable items are preferred , as they can be kept and used at a later date .
3 They can be kept singularly or in small groups , but ensure the aquarium has plenty of hiding places , for these fish can be aggressive towards one another .
4 They can be kept with Goldfish , and at a similar pH ( ideally 7.8–8.1 ) , but because of their unusual breeding habits , many people prefer to use a separate tank .
5 In 2 days they will have hatched and can be transferred to the aquarium ( containing a salt solution ) where they can be kept at room temperature like water-fleas .
6 If the rocks in your tank suffer from all-smothering algae I have found they can be kept clear by scrubbing off the algae then putting them in the oven or under the grill until they are thoroughly dry .
7 Index cards are easily handled and shuffled ; they can be kept in alphabetised boxes , come in different colours , and can have a topic , keyword or reference written at the top , as an indication of what is on the card .
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