Theaddressbook________theemailaddressesofyourfriendsorgroupsofcolleagues.
A、makesiteasytorecallShe________hernervousnesstotheimportanceoftheinterview.
Theproblem________whenthestudentsrefusedtodotheirhomework.
Theenginehasbrokenandtheboatis______onthewater.
Wemust______thattheexperimentiscontrolledasrigidlyaspossible.
________tothepapersisrestrictedtoDefenseDepartmentpersonnelonly.