The shop assistant sells the cap _____ fifteen yuan.[ ]

Lucy buys a nice sweater_________Huaxing Clothing Store.[ ]

Why don’t we take a taxi to the Olympic Sports Center in Hexi? —I can’t ____ it. Let’s take the bus instead.

Alice ____ eat meat so that he can keep herself from getting too fat.

These Maths problems are too hard to ______. Can you help me?—There are many ways, but the most important is to try your best.