Which of the following words is pronounced /spi：tʃ/？（　　）

Kelly's cheese cakes were sold out within half_____hour at the night market．（　　）

Mr． Smith always encourages his students to be active_____class．（　　）

The ancient town has been open to visitors_____about ten years．（　　）

_____friend Claude from France is keen on Chinese culture．（　　）