Experiments of this kind ______in both the U. S. and Europe well before the Second World War.
| A．have conducted |
| B．have been conducted |
| C．had conducted |
| D．had been conducted |
Although the necklace is not made of real crystal, it still ________ young tourists to this beautiful ancient city.
| A．appeals to | B．attracts to | C．accounts for | D．apply for |
Thelittlegirlshowednoanxietybeforethecompetition.Sheseemed_____foritprettywell.
| A．toprepare | B．tohaveprepared | C．havingprepared | D．tobepreparing |
Yourroomisterriblydirty;yougetitcleanedintwohours,orMumwillbeangry.
| A．can | B．might | C．shall | D．may |
.----I hate _____when others laugh at me in public or speak ill of me behind.
---_____ do I.
| A．it; So | B．that; So | C．it; Nor | D．that; Nor |
---- I'd like to open a current account.
---- _________
| A．Please jump the queue. | B．Please open an account. |
| C．Please fill out these forms. | D．You are slow. |