Don’t promise anything ______ you are one hundredpercent sure

32 ________ have the radio repaired，he’d like to buy a new one

The government tried its best to ______ the people’s needs, but the people were still not _______ .In fact, what the government did was not _______.[ ]

下列各句中，表达得体的一句是

I saw some boy students _ basketball when I passed the playground.