Is Tom at school today?No, He ’s at home ______ he has a bad cold.
A、becauseA
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Bylocaldoctorsandnurses,wehopemorepeople.
The local government leaders are making every effort to __ the problem of poverty.
Sometimes a bus ____ gets on the bus to check the tickets.
—Haveyoufinishedthework?
—Notyet,butnomatterhowharditis,we'llkeep___untilwemakeit.
—Have you finished the work?
—Not yet, but no matter how hard it is, we'll keep ___ until we make it.
