Manykindsofanimalsarebelievedtohave_________fromtheearth
A、withdrawnThisriverissobigthatitisimpossibletobuilda_______underitwithoutmoderntechnology.
Some lazy men would rather _______ than work.
Wecannot_______allthemagazinestogether.
When a spacecraft travels, one of the major problems is reentry into the Earth ’s _______.
Ifyouhaveanyproblemsduringyourstudyhere,pleasedonot_______tocallmeforhelp
