Heaskedmewhethermybrother________(fly)toBeijing.
________(catch)intherain,hewaswettotheskin.
Hotmetal________asitgrowscooler.
Ihavebeenstudyinghereforfouryears,bynextsummerI________.
Ifound________toanswerallthequestionswithinthetimegiven.
Somemoleculesarelargeenough________(see)undertheelectronicmicroscope.