请英语大侠解答（L1）1.Choosethecorrectword:bBoeing747’s(is–are–were)manufacturedinSeattle.eYourfinaltest(is–was–willbe)correctedbyyourteacher.fFaults(is–are–were)preventedbygoodmaintenance.g

Question

请英语大侠解答 （L1）
1.Choose the correct word:
b Boeing 747’s (is – are – were) manufactured in Seattle.
e Your final test (is – was – will be) corrected by your teacher.
f Faults (is – are – were) prevented by good maintenance.
g That pilot (is – are –was) trained in Bremen and Phoenix,too.
h Coffee (is – are – was) served on all Air China’s flights.
j This material ( is – are – was) prepared by English teachers.
k.Your salary ( is – are – was ) paid around the 25th of every month.
l.These examples ( are – were – will be) written to help you understand your
manuals.
4.Choose the answer with correct tense:
Runway 25 ( was / has been) extended.
When the defective part (was / has been) removed,the new part can be installed.
d.When the landing gear (was / has been ) retracted,the door close over it.
e.Many design modifications (were / have been) made to reduce aircraft noise.
g.The 737-300 (are / have been) replaced by 737-800.
h.The material (was / has been) ordered,but it (wasn’t / hasn’t been) delivered yet.
i.Flights to Berlin (have been / were) suspended.

Answer 1

is
will be
are
is/was
is
is/was
is
are
has been
has been
has been
have been
have been
has been hasn't been
have been