店员每天早上都要清点收银机里的现金。

The staff checks the money in the ___tills every morning.

这些冰碛物含有多种矿物质。

These ___tills contain a variety of minerals.

农夫每年春天都会犁地准备播种玉米。

The farmer ___tills the field every spring to prepare for planting corn.