Thismissileisdesignedsothatonce_____nothingcanbedonetoretrieveit.
A、fired
B、beingfired
C、theyfired
D、havingfired
Heconcludedhisspeechwitharemarkthatfailure____themotherofsuccess.
A、musthavelasted
B、willhavelasted
C、wouldlast
D、haslasted
_____regulartraininginnursing,shecouldhardlycopewiththeworkatfirst.
A、Notreceived
B、Sincereceiving
C、Havingreceived
D、Nothavingreceived
Alltheir__havebeenshownupbytheirowndeeds.
A、debates
B、decorations
C、deductions
D、deceptions
Tomhasbeenavegetarian____principleforyears.
A、in
B、on
C、for
D、by