_____ is no doubt ______ you have to remain seated and fasten your seatbelt before the plane lands.
| A．There; whether | B．It; that | C．There; that | D．It; whether |
His timely warning was_____ help us avoid being cheated.
| A．so as to | B．such as to | C．so that | D．such that |
We were on the point of discussing financial investment_____ the telephone rang unexpectedly.
| A．while | B．when | C．as | D．once |
How can I ever concentrate on my work if you_____ continually_____ me with such silly
questions?
| A．have, interrupted | B．had, interrupted | C．are, interrupting | D．were, interrupting |
The large, water-spouting statue, called “Merlin” －half lion, half fish－ is the____ of Singapore.
| A．symbol | B．sign | C．signal | D．scene |
There has been_____ rising demand for grain as_____ industrial material in spite of the nation’s
good harvests.
| A．/, an | B．a, an | C．the, an | D．a, / |