---Without smart phones, people closer to each other.
---Er, it seems to be high tech that has widened the distance between people.
| A．be | B．was | C．is | D．would be |
It is already well understood___________ causes the global warming.
| A．what | B．when | C．how | D．that |
___________we’ll go camping tomorrow depends on the weather.
| A．If | B．Whether | C．Where | D．That |
_________he said at the meeting astonished everybody.
| A．It | B．That | C．What | D．The fact |
Obviously they didn’t see the significance of the plan. That’s __________the problem was.
| A．why | B．where | C．that | D．how |
. -----Are you still thinking about yesterday’s game?
-----Oh, that is ____________.
| A．how I feel excited | B．if I feel excited |
| C．what makes me feel excited | D．why makes me feel excited |