As we all know, Jack is experienced _____ the problem of this kind.
| A．to work out | B．at working | C．at working out | D．for working out |
--What made your father throw up last night?
--I think the large quantities of wine __________.
| A．was | B．might | C．make | D．did |
The manager has to get all these washing machines
| A．to deliver | B．be delivered | C．delivered | D．delivering |
The air company going from bad to worse, the workers____________ hardly enough to make a living.
| A．are paid | B．are paying | C．have paid | D．paid |
The question came up at the meeting____________ we had enough money for our research.
| A．that | B．what | C．which | D．whether |
--Was Tom there when you arrived?
--Yes, but he___________ home soon afterwards.
| A．had gone | B．has gone | C．is | D．went |