單項(xiàng)選擇題Nobody could （） a satisfactory explanation of the accident.

A．come up with
B．come through
C．come upon
D．come into


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1.單項(xiàng)選擇題We have to get that car fixed （）.

A．no matter it costs how much
B．no matter how much costs it
C．no matter how much it costs
D．no matter how much does it cost

2.單項(xiàng)選擇題When I was a child, I used （） to the river and bathe in the evening.

A．to going
B．to go
C．go
D．going

3.單項(xiàng)選擇題As far as the professor （）, college students should get into the habit of studying by themselves.

A．concern
B．concerns
C．concerned
D．is concerned

4.單項(xiàng)選擇題Ryan was late for the conference yesterday （） the traffic jam.

A．because
B．since
C．for
D．because of

5.單項(xiàng)選擇題In my bedroom, there is a pair of scissors, a stack of books and （） flowers on my desk.

A．a(chǎn) piece of
B．a(chǎn) pocket of
C．a(chǎn) slice of
D．a(chǎn) bunch of