Many people claim that they have seen UFO with their own eyes, _____ I personally doubt.
| A．that | B．which | C．when | D．where |
Many sheep _______ eating grass by the river.
| A．is | B．are | C．is being | D．have |
At the bus stop _______ a solider and two young people on their way to the village.
| A．were | B．was | C．is | D．sits |
Such _________ the difficulties that we are now faced with.
| A．are | B．is | C．is being | D．be |
The Chinese _____ brave and hardworking.
| A．is | B．are | C．be | D．being |
Mary is the only one of the girls who _____ often late for school.
| A．is | B．are | C．comes | D．get |