Reports say the plane crashed 15 minutes after it took off, killing all 157 passengers _____

“If you are to succeed, you must put your shoulder to the wheel." my head teacher _______ says to the class.

The teacher criticize me, so I must finish my essay about agriculture,farmer and rural areas today______.

I’m afraid we can’t come, but thanks for the invitation_________.

Nowadays the roles of husband and wife are not as ______ defined as before, especially when both parents work and earn money for the family.