_ several times, but he still doesn’t know howto do it properly

To be honest! I always buy all _____ in China. —Well! Let’s go shopping.

__________ does your car need the vehicle repair— Every six months.

It’s already 10’clock. I wonder how it ____ that shewas two hours late on such a short trip.

In our classroom, the pupils work in groups, _______ helps them to learn to co-operate, to share and to develop leadership skill.