According to the latest investigation，most mistakes be prevented if students are careful enough．
| A．must | B．can | C．have to | D．need |
--- Excuse me, can you tell me the way to the bank?
---Oh, that's ____, it's either the second or the third road on the left.
| A．the difficult one | B．a hard one | C．an easy one | D．the very one |
I wonder ____ we can solve this hard problem.
| A．what else | B．how else | C．that | D．as if |
---Would you please give him the paper the moment he ____?
--- No problem.
| A．arrives | B．appearing | C．came | D．reaches |
____ is mentioned above, the number of the cattle here has been limited to 200.
| A．It | B．Which | C．That | D．As |
--- Any phone call for me?
--- Yes.____ telephoned 10 minutes ago.
| A．A Doctor Simpson | B．The certain doctor |
| C．The Tim Smith | D．A Simpson Doctor |