I didn’t have to work all weekend — I did it by _______.
| A．chance | B．choice | C．accident | D．myself |
＿＿＿＿＿,she may not catch up with her sister Lisa.
| A．Hard though she works |
| B．Hard although she works |
| C．Hard works she |
| D．Hard even if she works |
You can see a large signal on the wall：＿＿＿＿!
| A．Long lives the PRC | B．Long live the PRC |
| C．Long does the PRC live | D．Long do the PRC live |
Only since they gave up that good chance＿＿＿ to show their invention again.
| A．have they had no chance |
| B．they have had no chance |
| C．they have no chance |
| D．have they no chance |
We have looked for the lost sheep almost everywhere,but nowhere ＿＿＿＿＿.
| A．we can find it | B．can we find it |
| C．can find we it | D．we can it find |
After the patients went into the office,＿＿working.
| A．only a doctor did they see |
| B．only a doctor saw they |
| C．only a doctor they saw |
| D．only a doctor had they seen |