Nancywassurprisedthattheyhave（），Theyseemedtobeahappycouple.

.IfyouhavereallybeenstudyingEnglishforsolong,it’sabouttimeyou_____abletowritelettersinEnglish.

Everymeans____triedoutbutneverwithsuccess,asfarasmyknowledgegoes.

_____atinthisway,thepresenteconomicsituationdoesn'tseemsogloomy.

Whiledoingcalculationfortheproject,thedesigners____anewsolutiontoageologicalproblem.