Some of my friends are interested in science, but none of them can tell ________.

We will start as soon as our team leader _______

In big cities like London, Paris, New York, you can see street musicians _____ all kinds of music such as Rock’n’Roll, Jazz, the Blues in the streets. [ ]

Helen got up too late this morning, so she went to school _____ breakfast.

I’m wondering _________ Liu Xiangwill have time to_________ the meeting.