Is Alice playing both basketball and tennis for your school?—She _____But now she has given up playing basketball[ ]

It was because of his illness _____ the meeting had to be put off.

Would you like to have _____________ to drink now —No ,thanks.

（题文）The differences the children’s achievements can not be completely explained ________ their social backgrounds.

Shall I pay by cash or Wechat—_____. Either is OK.