英和和英

There are no apparent problems.

That problem was not discovered.

an open question

an elusive problem

There have been no problems so far.

There were no problems with the content.

a million questions

an open question

a slight problem

There were no problems when I confirmed it.

It has no problems.

There are no problems in particular.

an unsettled issue

Can't find it

There is a problem.

a trick question

I have looked for them in vain

I can not find them.

an open question

a moot point

a pending question

There is no problem at all.

A paper is set.

not able to be found

We have not encountered these problems.

I looked everywhere, but couldn't find it.

We can't find that.

I checked that there are no problems with the content.

a question arose

an insoluble problem

Couldn't find it

not discovered

an unsettled issue

not able to be found

an open question

a pending question

a moot point

not yet discovered

unknown problem

an insoluble problem

a question arose

A paper is set.

an elusive problem

a baffling problem

There is a problem.

Tasks seen

Can't find it

not solved

Hasn't been resolved

an open question

a settled question

the problems involved

a little problem

without suspicions

Can't find it

He made an exhaustive study of the subject.

not yet identified

No detection

an intractable problem

the issue is uncertain