He finally______ to find the reference book that he had been looking for.

A．is

B．are

C．has been

D．have been

A．since a long time

B．for some time

C．long before

D．some time ago

A．among which

B．for which

C．by means of which

D．as a result of which

A．that

B．this

C．it

D．on

A．check

B．checking

C．to check

D．checked

A．is

B．are

C．has

D．have

A．did pass

B．pass

C．were to pass

D．had passed

A．circumstances

B．environments

C．situations

D．conditions

A．paused

B．halted

C．ceased

D．cemented

A．without realizing it

B．because it" s part of their religion

C．because superstitions have proven to be true

D．because superstitions are amusing