请根据句意从方框中选择合适的动词,并用其适当时态填空,使句子通顺。
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— What a pity! I have missed the No. 4 bus.
— Don’t worry. The No. 22 bus also _____________ here.
— How long ___________ you ___________ the maths problem?
— Since the teacher left the classroom.
Sandy finished his project and _____________ to help with mine.
When there was a call, he _____________ for some photos of the Great Wall on the Internet.
If it is fine this weekend, I _____________ my friends to go hiking with me.