I haven’t heard________my son for weeks, so I’m worried__________him now.

下列各组划线的字的读音都相同的一组是（ ）

In English class, our teacher often creates an environment _____ we are given the opportunity to solve problems ourselves [ ]

Has Tom finishedwriting his essay today — I haveno idea He ______ it this morning

We know from their greetings how much they expect _____ us. We won’t let them down. [ ]