You know, Bob is a little slow____ understanding, so…— So, I have to be patient ____ him.[ ]

mself in carrying out anexperiment, he can’t spare time to look after hischildren.

Only after my friend came ___________________________.

It is the bus driver who should ______ the safety ofthe passengers.

_________you look at the ocean from the beach or on the map, remember that what you is only the surface