Those who’d like to visit the exhibition ________ (sign) your names here.
sign
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“Haveyoumovedintothenewflat?”“Notyet.Therooms________(paint).”
Iknowitisn’timportantbutIcan’thelp________aboutit.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.
Heaskedmewhethermybrother________(fly)toBeijing.
Ihavebeenstudyinghereforfouryears,bynextsummerI________.