He _____ unwisely, but he was at least trying to do something helpful.

A could never have happened

B might have happened

C should never have happened

D would never have happened

A should have asked

B would have asked

C shall ask

D might ask

A such an age-old technique as

B such as age–old technique

C such age-old techniques as

D such an age-old technique by

A was a major collection

B that a major collection

C a collection was major

D a major collection

A has been accepted

B have been accepted

C was accepted

D were accepted

A have allowed

B allow

C allows

D allowing

A had been

B were

C was

D would be

A is written

B be written

C are written

D will be written

A was lost

B will be lost

C would lose

D would have been lost

A finished

B should be finished

C must be finished

D should have been finished