The monument was built in honor of the explorer who was believed ________ the big river.
#88812
A
to have discovered
B
to have been discovered
C
to discover
D
having been discovered
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___ by thick bamboo and high forest, the ancient city hadn’t been discovered until the 1990s.
#95741
A
Surrounding
B
Surround
C
Surrounded
D
Having surrounded
After describing the planned improvements, she went on _______ how much they would cost.
#98428
A
to explain
B
explaining
C
to be explaining
D
having explained
by the advances in technology, many farmers have set up farms on their land.
#94658
A
Being encouraged
B
Encouraging
C
having encouraged
D
Encouraged