— What do you think of the book?
—Oh, excellent! It's worth________ .
A.to read B.read C.being read D.reading
They took rock samples back to Earth for _____study.
A.farther B.step by step C.further D.far away
Nick's brother________the navy in 2011and ________the navy since then.
A.joined; has joined B.joined in; has joined in
C.joined in; has been in D.joined; has been in
-- Chinese astronauts can also walk in space now.
-- Yes, they're ______ our nation.
A.proud of B.pleased with
C.the pride of D.known for
On 25 August, 2012, Neil Amstrong, the first man________on the moon,passed away.
A.walked B.walking C.to walk D.to walking
A report says China will send its people to the Moon________the first time around the year 2015.
A.at B.for C.with D.in
