大家帮忙解释初中英语单项选择题目,光给答案的当没看见处理!

1、Winters______warmerdduringthepast30years.Thedecadetoppedoutwithlastyear'sespeciallyhotsummer,inwhichtheaveragetemperature___19.5℃.

A、hadbeen;reachedB、were;hasreachedC、havebeen;reachedD、were;reached

2、He___fast;however,hewashadnochancetoswimfortwoyears.

A、isswimmingB、swamC、swimsD、hasswung

3、--Whatwereyoudoingwhentheearth-quakehappened?

--Ihadjustfinishedajobinterviewand___forthehotel.

A、leftB、wasleavingC、hadleftD、haveleft

4、Itseemsthatworkplacesaftty_____onuntilanaccidenthappens,fornoonekeepsaneyeonit.

A、won'tfocusB、isn'tfocusedC、doesn'tfocusD、won'tbefocused

5、--Therainshowsnosignsofstopping.

--Yes.Therescuecrews____forfloodrictimsalldaybecauseoftherisingwater.

A、havesearchedB、havebeensearchingC、aresearchingD、searched

6、Wehaveknowneachotherfortenyears;We___toeachotheratourfriend'sweddingcaremony.

A、havebeenintroducedB、areintroducedC、wereintroducedD、hadbeenintroduced

7、Youdon'tbuyanotebookPCforeverconsideringscienceandtechnology_____rapidly.

A、isdevelopingB、hasdevelopedC、willbedevelopingD、willdevelop

8、Althoughtthey___totheparty,theydidn'tturnupatlast.

A、invitedB、wasinvitedC、hadbeeninvitedD、havebeeninvited

9、--Whichtypeofthewatchdoyouthinksuitsme?

--Theonethat___inSwitzerland.

A、madeB、hasbeenmadeC、hadbeenmadeD、ismade

10、Youwon'tknowhowathingtastesuntilyou___it.

A、areeatingB、willeatC、haveeatenD、hadeaten.

不胜感激..