How soon will you start your journey? — I’m not sure. I haven’t decided_______.

My brother is _______ homework. He often ______ homework at homework.

Would you like an ice­cream，Diane?—No，thanks.I ____ eat them.They’re bad for my teeth.

You got back so late and you didn’t even give me a proper reason _______ you hadn’t called me! I’m very unhappy with you.

Due to the widespread ________ of this medical technology, more diseases can be discovered and treated at an early stage.