Correct the errors in the following sentences, if .
| A．not | B．necessary | C．any | D．ever |
Though they met for the first time，they talked ________they had been good friends.
| A．even if |
| B．as if |
| C．even though |
| D．if only |
The incident ________ a chain of events which resulted in the outbreak of World War I.
| A．set out |
| B．set up |
| C．set down |
| D．set off |
That weekend ________up for all the disappointments I'd had.
| A．took |
| B．put |
| C．made |
| D．set |
We found a little boy ________on the ground with both hands ________up with a rope.
| A．lying；tying |
| B．lay；tied |
| C．lying；tied |
| D．laid；tying |
“We can't go out in the weather，” Tom said，________ out of the window.
| A．looking |
| B．to look |
| C．looked |
| D．having looked |